diff --git a/backend/controllers/forumController.js b/backend/controllers/forumController.js
index 25ef95e..a37c9d3 100644
--- a/backend/controllers/forumController.js
+++ b/backend/controllers/forumController.js
@@ -58,6 +58,31 @@ const forumController = {
             console.error('Error in createTopic:', error);
             res.status(400).json({ error: error.message });
         }
+    },
+
+    async getTopic(req, res) {
+        try {
+            const { userid: userId } = req.headers;
+            const { id: topicId } = req.params;
+            const topic = await forumService.getTopic(userId, topicId);
+            res.status(200).json(topic);
+        } catch (error) {
+            console.error('Error in getTopic:', error);
+            res.status(400).json({ error: error.message });
+        }
+    },
+
+    async addMessage(req, res) {
+        try {
+            const { userid: userId } = req.headers;
+            const { id: topicId } = req.params;
+            const { content } = req.body;
+            const result = await forumService.addMessage(userId, topicId, content);
+            res.status(201).json(result);
+        } catch (error) {
+            console.error('Error in addMessage:', error);
+            res.status(400).json({ error: error.message });
+        }
     }
 };
 
diff --git a/backend/models/forum/title.js b/backend/models/forum/title.js
index 5463e27..2a2e21e 100644
--- a/backend/models/forum/title.js
+++ b/backend/models/forum/title.js
@@ -2,6 +2,11 @@ import { sequelize } from '../../utils/sequelize.js';
 import { DataTypes } from 'sequelize';
 
 const Title = sequelize.define('title', {
+    id: {
+        type: DataTypes.INTEGER,
+        primaryKey: true,
+        autoIncrement: true
+    },
     title: {
         type: DataTypes.STRING,
         allowNull: false
diff --git a/backend/routers/forumRouter.js b/backend/routers/forumRouter.js
index e50ae44..6452e17 100644
--- a/backend/routers/forumRouter.js
+++ b/backend/routers/forumRouter.js
@@ -6,7 +6,9 @@ const forumRouter = Router();
 
 forumRouter.use(authenticate);
 
+forumRouter.post('/topic/:id/message', forumController.addMessage);
 forumRouter.post('/topic', forumController.createTopic);
+forumRouter.get('/topic/:id', forumController.getTopic);
 forumRouter.post('/', forumController.createForum);
 forumRouter.delete('/:forumId', forumController.deleteForum);
 forumRouter.get('/:forumId/:page', forumController.getForum);
diff --git a/backend/services/forumService.js b/backend/services/forumService.js
index 73605fa..c221954 100644
--- a/backend/services/forumService.js
+++ b/backend/services/forumService.js
@@ -196,6 +196,103 @@ class ForumService extends BaseService {
         return this.getForum(hashedUserId, forumId, 1);
     }
 
+    async getTopic(hashedUserId, topicId) {
+        console.log('[ForumService.getTopic] - start');
+        const user = await User.findOne({
+            where: {
+                hashedId: hashedUserId
+            }
+        });
+        if (!user) {
+            throw new Error('User not found.');
+        }
+        const topic = await Title.findByPk(topicId, {
+            include: [
+                {
+                    model: Message,
+                    as:'messages',
+                    include: [
+                        {
+                            model: User,
+                            as: 'lastMessageUser',
+                            attributes: ['hashedId', 'username'],
+                            order: [['createdAt', 'ASC']]
+                        }
+                    ]
+                },
+                {
+                    model: User,
+                    as: 'createdByUser',
+                    attributes: ['username', 'hashedId']
+                },
+                {
+                    model: Forum,
+                    as: 'forum',
+                    attributes: ['id', 'name']
+                }
+            ]
+        });
+        if (!topic) {
+            throw new Error('Topic not found.');
+        }
+        console.log('[ForumService.getTopic] - check user permissions');
+        const hasAccess = await this.checkForumAccess(topic.forum, user);
+        if (!hasAccess) {
+            throw new Error('Access denied.');
+        }
+        console.log('[ForumService.getTopic] - return topic');
+        return topic;
+    }
+
+    async addMessage(hashedUserId, topicId, content) {
+        console.log('[ForumService.addMessage] - start');
+        const user = await User.findOne({
+            where: {
+                hashedId: hashedUserId
+            }
+        });
+        if (!user) {
+            throw new Error('User not found.');
+        }
+        const topic = await Title.findByPk(topicId, {
+            include: [
+                {
+                    model: Message,
+                    as:'messages',
+                    include: [
+                        {
+                            model: User,
+                            as: 'lastMessageUser',
+                            attributes: ['hashedId', 'username'],
+                            order: [['createdAt', 'ASC']]
+                        }
+                    ]
+                },
+                {
+                    model: User,
+                    as: 'createdByUser',
+                    attributes: ['username', 'hashedId']
+                },
+                {
+                    model: Forum,
+                    as: 'forum',
+                    attributes: ['id', 'name']
+                }
+            ]
+        });
+        if (!topic) {
+            throw new Error('Topic not found.');
+        }
+        const hasAccess = await this.checkForumAccess(topic.forum, user);
+        if (!hasAccess) {
+            throw new Error('Access denied.');
+        }
+        console.log('[ForumService.addMessage] - create new message');
+        await Message.create({ titleId: topicId, text: content, createdBy: user.id });
+        console.log('[ForumService.addMessage] - return topic');
+        return this.getTopic(hashedUserId, topicId);
+    }
+
     async checkForumAccess(forum, user) {
         console.log('[ForumService.checkForumAccess] - start');
         const { age } = user;
diff --git a/frontend/src/i18n/locales/de/socialnetwork.json b/frontend/src/i18n/locales/de/socialnetwork.json
index 1a8f899..b32677e 100644
--- a/frontend/src/i18n/locales/de/socialnetwork.json
+++ b/frontend/src/i18n/locales/de/socialnetwork.json
@@ -229,7 +229,8 @@
                 "next": "Nächste Seite",
                 "last": "Letzte Seite",
                 "page": "Seite <<page>> von <<of>>"
-            }
+            },
+            "createNewMesssage": "Antwort senden"
         }
     }
 }
\ No newline at end of file
diff --git a/frontend/src/router/index.js b/frontend/src/router/index.js
index 8353587..1398cce 100644
--- a/frontend/src/router/index.js
+++ b/frontend/src/router/index.js
@@ -16,6 +16,7 @@ import GuestbookView from '../views/social/GuestbookView.vue';
 import DiaryView from '../views/social/DiaryView.vue';
 import ForumAdminView from '../dialogues/admin/ForumAdminView.vue';
 import ForumView from '../views/social/ForumView.vue';
+import ForumTopicView from '../views/social/ForumTopicView.vue';
 
 const routes = [
   {
@@ -52,6 +53,12 @@ const routes = [
     component: ForumView,
     meta: { requiresAuth: true }
   },
+  {
+    path: '/socialnetwork/forumtopic/:id',
+    name: 'ForumTopic',
+    component: ForumTopicView,
+    meta: { requiresAuth: true }
+  },
   {
     path: '/socialnetwork/diary',
     name: 'Diary',
diff --git a/frontend/src/views/social/ForumTopicView.vue b/frontend/src/views/social/ForumTopicView.vue
new file mode 100644
index 0000000..b878523
--- /dev/null
+++ b/frontend/src/views/social/ForumTopicView.vue
@@ -0,0 +1,127 @@
+<template>
+    <h2 class="link" @click="openForum()">{{ $t('socialnetwork.forum.title') }} {{ forumName }}</h2>
+    <h3 v-if="forumTopic">{{ forumTopic }}</h3>
+    <ul class="messages">
+        <li v-for="message in messages">
+            <div v-html="message.text"></div>
+            <div class="footer">
+                <span class="link" @click="openProfile(message.lastMessageUser.hashedId)">{{
+                    message.lastMessageUser.username }}</span>
+                <span>{{ new Date(message.createdAt).toLocaleString() }}</span>
+            </div>
+        </li>
+    </ul>
+    <editor v-model="newContent" :init="tinymceInitOptions" :api-key="apiKey"
+        tinymce-script-src="/tinymce/tinymce.min.js"></editor>
+    <button @click="saveNewMessage">{{ $t('socialnetwork.forum.createNewMesssage') }}</button>
+</template>
+
+<script>
+import apiClient from '../../utils/axios';
+import TinyMCEEditor from '@tinymce/tinymce-vue';
+
+export default {
+    name: 'ForumTopicView',
+    components: {
+        editor: TinyMCEEditor,
+    },
+    data() {
+        return {
+            forumTopicId: String,
+            forumTopic: null,
+            forumName: null,
+            forumId: 0,
+            newContent: '',
+            apiKey: import.meta.env.VITE_TINYMCE_API_KEY ?? '',
+            tinymceInitOptions: {
+                script_url: '/tinymce/tinymce.min.js',
+                height: 300,
+                menubar: true,
+                plugins: [
+                    'lists', 'link',
+                    'searchreplace', 'visualblocks', 'code',
+                    'insertdatetime', 'table'
+                ],
+                toolbar:
+                    'undo redo cut copy paste | bold italic forecolor backcolor fontfamily fontsize| \
+                    alignleft aligncenter alignright alignjustify | \
+                    bullist numlist outdent indent | removeformat | link visualblocks code',
+                contextmenu: 'link image table',
+                menubar: 'edit format table',
+                promotion: false,
+            },
+        }
+    },
+    async mounted() {
+        this.forumTopicId = this.$route.params.id;
+        this.loadForumTopic();
+    },
+    methods: {
+        async loadForumTopic() {
+            try {
+                console.log(this.forumTopicId);
+                const url = `/api/forum/topic/${this.forumTopicId}`;
+                console.log('url', url);
+                const response = await apiClient.get(url);
+                this.setContent(response.data);
+            } catch (error) {
+                console.error(error);
+            }
+        },
+        setContent(responseData) {
+            this.forumTopic = responseData.title;
+            this.forumName = responseData.forum.name;
+            this.forumId = responseData.forum.id;
+            this.messages = responseData.messages;
+        },
+        async openProfile(id) {
+            this.$root.$refs.userProfileDialog.userId = id;
+            this.$root.$refs.userProfileDialog.open();
+        },
+        async saveNewMessage() {
+            try {
+                const url = `/api/forum/topic/${this.forumTopicId}/message`;
+                const response = await apiClient.post(url, {
+                    content: this.newContent,
+                });
+                this.newContent = '';
+                this.setContent(response.data);
+            } catch (error) {
+                console.error(error);
+            }
+        },
+        openForum() {
+            this.$router.push(`/socialnetwork/forum/${this.forumId}`);
+        }
+    }
+}
+</script>
+
+<style lang="scss" scoped>
+.messages {
+    list-style-type: none;
+    padding: 0;
+    margin: 0;
+}
+
+.messages > li {
+    border: 1px solid #7BBE55;
+    margin-bottom: 0.25em;
+    padding: 0.5em;
+}
+
+.messages > li > .footer {
+    color: #F9A22C;
+    font-size: 0.7em;
+    margin-top: 0.5em;
+    display: flex;
+}
+
+.messages>li>.footer>span:first-child {
+    flex: 1;
+}
+
+.messages > li > .footer > span:last-child {
+    text-align: right;
+}
+</style>
\ No newline at end of file
diff --git a/frontend/src/views/social/ForumView.vue b/frontend/src/views/social/ForumView.vue
index 722860f..7e8f7dd 100644
--- a/frontend/src/views/social/ForumView.vue
+++ b/frontend/src/views/social/ForumView.vue
@@ -11,7 +11,7 @@
                 <input type="text" v-model="newTitle" />
             </label>
         </div>
-        <editor v-model="newEntryContent" :init="tinymceInitOptions" :api-key="apiKey"
+        <editor v-model="newContent" :init="tinymceInitOptions" :api-key="apiKey"
             tinymce-script-src="/tinymce/tinymce.min.js"></editor>
         <button @click="saveNewTopic">{{ $t('socialnetwork.forum.createNewTopic') }}</button>
     </div>
@@ -148,7 +148,10 @@ export default {
         openProfile(id) {
             this.$root.$refs.userProfileDialog.userId = id;
             this.$root.$refs.userProfileDialog.open();
-        }
+        },
+        openTopic(topicId) {
+            this.$router.push(`/socialnetwork/forumtopic/${topicId}`);
+        },
     }
 }
 </script>