diff --git a/app/controllers/api/v1/accounts/relationships_controller.rb b/app/controllers/api/v1/accounts/relationships_controller.rb
index 1d3992a285..320084efb5 100644
--- a/app/controllers/api/v1/accounts/relationships_controller.rb
+++ b/app/controllers/api/v1/accounts/relationships_controller.rb
@@ -5,10 +5,11 @@ class Api::V1::Accounts::RelationshipsController < Api::BaseController
   before_action :require_user!
 
   def index
-    accounts = Account.where(id: account_ids).select('id')
+    scope = Account.where(id: account_ids).select('id')
+    scope.merge!(Account.without_suspended) unless truthy_param?(:with_suspended)
     # .where doesn't guarantee that our results are in the same order
     # we requested them, so return the "right" order to the requestor.
-    @accounts = accounts.index_by(&:id).values_at(*account_ids).compact
+    @accounts = scope.index_by(&:id).values_at(*account_ids).compact
     render json: @accounts, each_serializer: REST::RelationshipSerializer, relationships: relationships
   end
 
diff --git a/app/javascript/mastodon/actions/accounts.js b/app/javascript/mastodon/actions/accounts.js
index 4a985a41ef..e0448f004c 100644
--- a/app/javascript/mastodon/actions/accounts.js
+++ b/app/javascript/mastodon/actions/accounts.js
@@ -460,7 +460,7 @@ export function fetchRelationships(accountIds) {
 
     dispatch(fetchRelationshipsRequest(newAccountIds));
 
-    api(getState).get(`/api/v1/accounts/relationships?${newAccountIds.map(id => `id[]=${id}`).join('&')}`).then(response => {
+    api(getState).get(`/api/v1/accounts/relationships?with_suspended=true&${newAccountIds.map(id => `id[]=${id}`).join('&')}`).then(response => {
       dispatch(fetchRelationshipsSuccess({ relationships: response.data }));
     }).catch(error => {
       dispatch(fetchRelationshipsFail(error));
diff --git a/app/javascript/mastodon/components/account.jsx b/app/javascript/mastodon/components/account.jsx
index aa18ce79a5..f82dd9153a 100644
--- a/app/javascript/mastodon/components/account.jsx
+++ b/app/javascript/mastodon/components/account.jsx
@@ -119,7 +119,7 @@ class Account extends ImmutablePureComponent {
         buttons = <Button title={intl.formatMessage(messages.mute)} onClick={this.handleMute} />;
       } else if (defaultAction === 'block') {
         buttons = <Button text={intl.formatMessage(messages.block)} onClick={this.handleBlock} />;
-      } else if (!account.get('moved') || following) {
+      } else if (!account.get('suspended') && !account.get('moved') || following) {
         buttons = <Button text={intl.formatMessage(following ? messages.unfollow : messages.follow)} onClick={this.handleFollow} />;
       }
     }
diff --git a/app/javascript/mastodon/features/account/components/header.jsx b/app/javascript/mastodon/features/account/components/header.jsx
index e546c75693..7594135a4e 100644
--- a/app/javascript/mastodon/features/account/components/header.jsx
+++ b/app/javascript/mastodon/features/account/components/header.jsx
@@ -289,7 +289,7 @@ class Header extends ImmutablePureComponent {
       lockedIcon = <Icon id='lock' icon={LockIcon} title={intl.formatMessage(messages.account_locked)} />;
     }
 
-    if (signedIn && account.get('id') !== me) {
+    if (signedIn && account.get('id') !== me && !account.get('suspended')) {
       menu.push({ text: intl.formatMessage(messages.mention, { name: account.get('username') }), action: this.props.onMention });
       menu.push({ text: intl.formatMessage(messages.direct, { name: account.get('username') }), action: this.props.onDirect });
       menu.push(null);
@@ -299,7 +299,7 @@ class Header extends ImmutablePureComponent {
       menu.push({ text: intl.formatMessage(messages.openOriginalPage), href: account.get('url') });
     }
 
-    if ('share' in navigator) {
+    if ('share' in navigator && !account.get('suspended')) {
       menu.push({ text: intl.formatMessage(messages.share, { name: account.get('username') }), action: this.handleShare });
       menu.push(null);
     }
@@ -347,7 +347,9 @@ class Header extends ImmutablePureComponent {
         menu.push({ text: intl.formatMessage(messages.block, { name: account.get('username') }), action: this.props.onBlock, dangerous: true });
       }
 
-      menu.push({ text: intl.formatMessage(messages.report, { name: account.get('username') }), action: this.props.onReport, dangerous: true });
+      if (!account.get('suspended')) {
+        menu.push({ text: intl.formatMessage(messages.report, { name: account.get('username') }), action: this.props.onReport, dangerous: true });
+      }
     }
 
     if (signedIn && isRemote) {
@@ -395,7 +397,7 @@ class Header extends ImmutablePureComponent {
 
         <div className='account__header__image'>
           <div className='account__header__info'>
-            {!suspended && info}
+            {info}
           </div>
 
           {!(suspended || hidden) && <img src={autoPlayGif ? account.get('header') : account.get('header_static')} alt='' className='parallax' />}
@@ -407,18 +409,16 @@ class Header extends ImmutablePureComponent {
               <Avatar account={suspended || hidden ? undefined : account} size={90} />
             </a>
 
-            {!suspended && (
-              <div className='account__header__tabs__buttons'>
-                {!hidden && (
-                  <>
-                    {actionBtn}
-                    {bellBtn}
-                  </>
-                )}
+            <div className='account__header__tabs__buttons'>
+              {!hidden && (
+                <>
+                  {actionBtn}
+                  {bellBtn}
+                </>
+              )}
 
-                <DropdownMenuContainer disabled={menu.length === 0} items={menu} icon='ellipsis-v' iconComponent={MoreHorizIcon} size={24} direction='right' />
-              </div>
-            )}
+              <DropdownMenuContainer disabled={menu.length === 0} items={menu} icon='ellipsis-v' iconComponent={MoreHorizIcon} size={24} direction='right' />
+            </div>
           </div>
 
           <div className='account__header__tabs__name'>
diff --git a/app/javascript/mastodon/features/video/index.jsx b/app/javascript/mastodon/features/video/index.jsx
index f88e9042ef..bef14ea276 100644
--- a/app/javascript/mastodon/features/video/index.jsx
+++ b/app/javascript/mastodon/features/video/index.jsx
@@ -469,6 +469,10 @@ class Video extends PureComponent {
   };
 
   _syncVideoToVolumeState = (volume = null, muted = null) => {
+    if (!this.video) {
+      return;
+    }
+
     this.video.volume = volume ?? this.state.volume;
     this.video.muted = muted ?? this.state.muted;
   };
diff --git a/config/initializers/sidekiq.rb b/config/initializers/sidekiq.rb
index 319b386645..9a2743ed5b 100644
--- a/config/initializers/sidekiq.rb
+++ b/config/initializers/sidekiq.rb
@@ -43,6 +43,7 @@ end
 Sidekiq.logger.level = ::Logger.const_get(ENV.fetch('RAILS_LOG_LEVEL', 'info').upcase.to_s)
 
 SidekiqUniqueJobs.configure do |config|
+  config.enabled         = !Rails.env.test?
   config.reaper          = :ruby
   config.reaper_count    = 1000
   config.reaper_interval = 600
diff --git a/config/routes/api.rb b/config/routes/api.rb
index f4e4b204ad..0ac9173e3e 100644
--- a/config/routes/api.rb
+++ b/config/routes/api.rb
@@ -303,6 +303,10 @@ namespace :api, format: false do
       resources :statuses, only: [:show, :destroy]
     end
 
+    namespace :accounts do
+      resources :relationships, only: :index
+    end
+
     namespace :admin do
       resources :accounts, only: [:index]
     end
diff --git a/spec/controllers/accounts_controller_spec.rb b/spec/controllers/accounts_controller_spec.rb
index cc9e3198b6..542a748784 100644
--- a/spec/controllers/accounts_controller_spec.rb
+++ b/spec/controllers/accounts_controller_spec.rb
@@ -7,66 +7,44 @@ RSpec.describe AccountsController do
 
   let(:account) { Fabricate(:account) }
 
-  shared_examples 'unapproved account check' do
+  describe 'unapproved account check' do
     before { account.user.update(approved: false) }
 
     it 'returns http not found' do
-      get :show, params: { username: account.username, format: format }
-
-      expect(response).to have_http_status(404)
+      %w(html json rss).each do |format|
+        get :show, params: { username: account.username, format: format }
+        expect(response).to have_http_status(404)
+      end
     end
   end
 
-  shared_examples 'permanently suspended account check' do
+  describe 'permanently suspended account check' do
     before do
       account.suspend!
       account.deletion_request.destroy
     end
 
     it 'returns http gone' do
-      get :show, params: { username: account.username, format: format }
-
-      expect(response).to have_http_status(410)
+      %w(html json rss).each do |format|
+        get :show, params: { username: account.username, format: format }
+        expect(response).to have_http_status(410)
+      end
     end
   end
 
-  shared_examples 'temporarily suspended account check' do |code: 403|
+  describe 'temporarily suspended account check' do
     before { account.suspend! }
 
     it 'returns appropriate http response code' do
-      get :show, params: { username: account.username, format: format }
+      { html: 403, json: 200, rss: 403 }.each do |format, code|
+        get :show, params: { username: account.username, format: format }
 
-      expect(response).to have_http_status(code)
+        expect(response).to have_http_status(code)
+      end
     end
   end
 
   describe 'GET #show' do
-    context 'with basic account status checks' do
-      context 'with HTML' do
-        let(:format) { 'html' }
-
-        it_behaves_like 'unapproved account check'
-        it_behaves_like 'permanently suspended account check'
-        it_behaves_like 'temporarily suspended account check'
-      end
-
-      context 'with JSON' do
-        let(:format) { 'json' }
-
-        it_behaves_like 'unapproved account check'
-        it_behaves_like 'permanently suspended account check'
-        it_behaves_like 'temporarily suspended account check', code: 200
-      end
-
-      context 'with RSS' do
-        let(:format) { 'rss' }
-
-        it_behaves_like 'unapproved account check'
-        it_behaves_like 'permanently suspended account check'
-        it_behaves_like 'temporarily suspended account check'
-      end
-    end
-
     context 'with existing statuses' do
       let!(:status) { Fabricate(:status, account: account) }
       let!(:status_reply) { Fabricate(:status, account: account, thread: Fabricate(:status)) }
@@ -227,22 +205,15 @@ RSpec.describe AccountsController do
       context 'with RSS' do
         let(:format) { 'rss' }
 
-        shared_examples 'common RSS response' do
-          it 'returns http success' do
-            expect(response).to have_http_status(200)
-          end
-
-          it_behaves_like 'cacheable response', expects_vary: 'Accept, Accept-Language, Cookie'
-        end
-
         context 'with a normal account in an RSS request' do
           before do
             get :show, params: { username: account.username, format: format }
           end
 
-          it_behaves_like 'common RSS response'
+          it_behaves_like 'cacheable response', expects_vary: 'Accept, Accept-Language, Cookie'
 
           it 'responds with correct statuses', :aggregate_failures do
+            expect(response).to have_http_status(200)
             expect(response.body).to include_status_tag(status_media)
             expect(response.body).to include_status_tag(status_self_reply)
             expect(response.body).to include_status_tag(status)
@@ -259,9 +230,10 @@ RSpec.describe AccountsController do
             get :show, params: { username: account.username, format: format }
           end
 
-          it_behaves_like 'common RSS response'
+          it_behaves_like 'cacheable response', expects_vary: 'Accept, Accept-Language, Cookie'
 
           it 'responds with correct statuses with replies', :aggregate_failures do
+            expect(response).to have_http_status(200)
             expect(response.body).to include_status_tag(status_media)
             expect(response.body).to include_status_tag(status_reply)
             expect(response.body).to include_status_tag(status_self_reply)
@@ -278,9 +250,10 @@ RSpec.describe AccountsController do
             get :show, params: { username: account.username, format: format }
           end
 
-          it_behaves_like 'common RSS response'
+          it_behaves_like 'cacheable response', expects_vary: 'Accept, Accept-Language, Cookie'
 
           it 'responds with correct statuses with media', :aggregate_failures do
+            expect(response).to have_http_status(200)
             expect(response.body).to include_status_tag(status_media)
             expect(response.body).to_not include_status_tag(status_direct)
             expect(response.body).to_not include_status_tag(status_private)
@@ -302,9 +275,10 @@ RSpec.describe AccountsController do
             get :show, params: { username: account.username, format: format, tag: tag.to_param }
           end
 
-          it_behaves_like 'common RSS response'
+          it_behaves_like 'cacheable response', expects_vary: 'Accept, Accept-Language, Cookie'
 
           it 'responds with correct statuses with a tag', :aggregate_failures do
+            expect(response).to have_http_status(200)
             expect(response.body).to include_status_tag(status_tag)
             expect(response.body).to_not include_status_tag(status_direct)
             expect(response.body).to_not include_status_tag(status_media)
diff --git a/spec/controllers/api/v1/accounts/relationships_controller_spec.rb b/spec/controllers/api/v1/accounts/relationships_controller_spec.rb
deleted file mode 100644
index 5ba6f2a1f8..0000000000
--- a/spec/controllers/api/v1/accounts/relationships_controller_spec.rb
+++ /dev/null
@@ -1,102 +0,0 @@
-# frozen_string_literal: true
-
-require 'rails_helper'
-
-describe Api::V1::Accounts::RelationshipsController do
-  render_views
-
-  let(:user)  { Fabricate(:user) }
-  let(:token) { Fabricate(:accessible_access_token, resource_owner_id: user.id, scopes: 'read:follows') }
-
-  before do
-    allow(controller).to receive(:doorkeeper_token) { token }
-  end
-
-  describe 'GET #index' do
-    let(:simon) { Fabricate(:account) }
-    let(:lewis) { Fabricate(:account) }
-
-    before do
-      user.account.follow!(simon)
-      lewis.follow!(user.account)
-    end
-
-    context 'when provided only one ID' do
-      before do
-        get :index, params: { id: simon.id }
-      end
-
-      it 'returns JSON with correct data', :aggregate_failures do
-        json = body_as_json
-
-        expect(response).to have_http_status(200)
-        expect(json).to be_a Enumerable
-        expect(json.first[:following]).to be true
-        expect(json.first[:followed_by]).to be false
-      end
-    end
-
-    context 'when provided multiple IDs' do
-      before do
-        get :index, params: { id: [simon.id, lewis.id] }
-      end
-
-      it 'returns http success' do
-        expect(response).to have_http_status(200)
-      end
-
-      context 'when there is returned JSON data' do
-        let(:json) { body_as_json }
-
-        it 'returns an enumerable json with correct elements', :aggregate_failures do
-          expect(json).to be_a Enumerable
-
-          expect_simon_item_one
-          expect_lewis_item_two
-        end
-
-        def expect_simon_item_one
-          expect(json.first[:id]).to eq simon.id.to_s
-          expect(json.first[:following]).to be true
-          expect(json.first[:showing_reblogs]).to be true
-          expect(json.first[:followed_by]).to be false
-          expect(json.first[:muting]).to be false
-          expect(json.first[:requested]).to be false
-          expect(json.first[:domain_blocking]).to be false
-        end
-
-        def expect_lewis_item_two
-          expect(json.second[:id]).to eq lewis.id.to_s
-          expect(json.second[:following]).to be false
-          expect(json.second[:showing_reblogs]).to be false
-          expect(json.second[:followed_by]).to be true
-          expect(json.second[:muting]).to be false
-          expect(json.second[:requested]).to be false
-          expect(json.second[:domain_blocking]).to be false
-        end
-      end
-
-      it 'returns JSON with correct data on cached requests too' do
-        get :index, params: { id: [simon.id] }
-
-        json = body_as_json
-
-        expect(json).to be_a Enumerable
-        expect(json.first[:following]).to be true
-        expect(json.first[:showing_reblogs]).to be true
-      end
-
-      it 'returns JSON with correct data after change too' do
-        user.account.unfollow!(simon)
-
-        get :index, params: { id: [simon.id] }
-
-        json = body_as_json
-
-        expect(json).to be_a Enumerable
-        expect(json.first[:following]).to be false
-        expect(json.first[:showing_reblogs]).to be false
-      end
-    end
-  end
-end
diff --git a/spec/requests/api/v1/accounts/relationships_spec.rb b/spec/requests/api/v1/accounts/relationships_spec.rb
new file mode 100644
index 0000000000..bb78e3b3e4
--- /dev/null
+++ b/spec/requests/api/v1/accounts/relationships_spec.rb
@@ -0,0 +1,133 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe 'GET /api/v1/accounts/relationships' do
+  subject do
+    get '/api/v1/accounts/relationships', headers: headers, params: params
+  end
+
+  let(:user)    { Fabricate(:user) }
+  let(:scopes)  { 'read:follows' }
+  let(:token)   { Fabricate(:accessible_access_token, resource_owner_id: user.id, scopes: scopes) }
+  let(:headers) { { 'Authorization' => "Bearer #{token.token}" } }
+
+  let(:simon) { Fabricate(:account) }
+  let(:lewis) { Fabricate(:account) }
+  let(:bob)   { Fabricate(:account, suspended: true) }
+
+  before do
+    user.account.follow!(simon)
+    lewis.follow!(user.account)
+  end
+
+  context 'when provided only one ID' do
+    let(:params) { { id: simon.id } }
+
+    it 'returns JSON with correct data', :aggregate_failures do
+      subject
+
+      json = body_as_json
+
+      expect(response).to have_http_status(200)
+      expect(json).to be_a Enumerable
+      expect(json.first[:following]).to be true
+      expect(json.first[:followed_by]).to be false
+    end
+  end
+
+  context 'when provided multiple IDs' do
+    let(:params) { { id: [simon.id, lewis.id, bob.id] } }
+
+    context 'when there is returned JSON data' do
+      let(:json) { body_as_json }
+
+      context 'with default parameters' do
+        it 'returns an enumerable json with correct elements, excluding suspended accounts', :aggregate_failures do
+          subject
+
+          expect(response).to have_http_status(200)
+          expect(json).to be_a Enumerable
+          expect(json.size).to eq 2
+
+          expect_simon_item_one
+          expect_lewis_item_two
+        end
+      end
+
+      context 'with `with_suspended` parameter' do
+        let(:params) { { id: [simon.id, lewis.id, bob.id], with_suspended: true } }
+
+        it 'returns an enumerable json with correct elements, including suspended accounts', :aggregate_failures do
+          subject
+
+          expect(response).to have_http_status(200)
+          expect(json).to be_a Enumerable
+          expect(json.size).to eq 3
+
+          expect_simon_item_one
+          expect_lewis_item_two
+          expect_bob_item_three
+        end
+      end
+
+      def expect_simon_item_one
+        expect(json.first[:id]).to eq simon.id.to_s
+        expect(json.first[:following]).to be true
+        expect(json.first[:showing_reblogs]).to be true
+        expect(json.first[:followed_by]).to be false
+        expect(json.first[:muting]).to be false
+        expect(json.first[:requested]).to be false
+        expect(json.first[:domain_blocking]).to be false
+      end
+
+      def expect_lewis_item_two
+        expect(json.second[:id]).to eq lewis.id.to_s
+        expect(json.second[:following]).to be false
+        expect(json.second[:showing_reblogs]).to be false
+        expect(json.second[:followed_by]).to be true
+        expect(json.second[:muting]).to be false
+        expect(json.second[:requested]).to be false
+        expect(json.second[:domain_blocking]).to be false
+      end
+
+      def expect_bob_item_three
+        expect(json.third[:id]).to eq bob.id.to_s
+        expect(json.third[:following]).to be false
+        expect(json.third[:showing_reblogs]).to be false
+        expect(json.third[:followed_by]).to be false
+        expect(json.third[:muting]).to be false
+        expect(json.third[:requested]).to be false
+        expect(json.third[:domain_blocking]).to be false
+      end
+    end
+
+    it 'returns JSON with correct data on cached requests too' do
+      subject
+      subject
+
+      expect(response).to have_http_status(200)
+
+      json = body_as_json
+
+      expect(json).to be_a Enumerable
+      expect(json.first[:following]).to be true
+      expect(json.first[:showing_reblogs]).to be true
+    end
+
+    it 'returns JSON with correct data after change too' do
+      subject
+      user.account.unfollow!(simon)
+
+      get '/api/v1/accounts/relationships', headers: headers, params: { id: [simon.id] }
+
+      expect(response).to have_http_status(200)
+
+      json = body_as_json
+
+      expect(json).to be_a Enumerable
+      expect(json.first[:following]).to be false
+      expect(json.first[:showing_reblogs]).to be false
+    end
+  end
+end