diff --git a/src/endpoints/tv-episode.ts b/src/endpoints/tv-episode.ts
index f7e9e7d..88ee28e 100644
--- a/src/endpoints/tv-episode.ts
+++ b/src/endpoints/tv-episode.ts
@@ -12,6 +12,7 @@ import {
   AppendToResponse,
   Changes,
   TvEpisodeChangeValue,
+  AppendToResponseTvEpisodeKey,
 } from '..';
 import { BaseEndpoint } from './base';
 
@@ -24,7 +25,7 @@ export class TvEpisodesEndpoint extends BaseEndpoint {
     super(accessToken);
   }
 
-  async details<T extends AppendToResponseMovieKey[] | undefined>(
+  async details<T extends AppendToResponseTvEpisodeKey[] | undefined>(
     episodeSelection: EpisodeSelection,
     appendToResponse?: T,
     options?: LanguageOption
@@ -37,7 +38,7 @@ export class TvEpisodesEndpoint extends BaseEndpoint {
     };
 
     return await this.api.get<
-      AppendToResponse<Omit<Episode, 'show_id'>, T, 'movie'>
+      AppendToResponse<Omit<Episode, 'show_id'>, T, 'tvEpisode'>
     >(`${BASE_EPISODE(episodeSelection)}`, combinedOptions);
   }
 
diff --git a/src/types/options.ts b/src/types/options.ts
index bdff84d..b2ceb61 100644
--- a/src/types/options.ts
+++ b/src/types/options.ts
@@ -27,6 +27,8 @@ import {
   MovieChangeValue,
   TvShowChangeValue,
   TvEpisodeChangeValue,
+  TvEpisodeCredit,
+  TvEpisodeTranslations,
 } from '.';
 
 export interface LanguageOption {
@@ -90,12 +92,24 @@ export type AppendToResponsePersonKey =
   | 'tagged_images'
   | 'translations';
 
+export type AppendToResponseTvEpisodeKey =
+  | 'images'
+  | 'credits'
+  | 'external_ids'
+  | 'videos'
+  | 'translations';
+
 type AppendToResponseAllKeys =
   | AppendToResponseTvKey
   | AppendToResponseMovieKey
+  | AppendToResponseTvEpisodeKey
   | AppendToResponsePersonKey;
 
-export type AppendToResponseMediaType = 'movie' | 'tvShow' | 'person';
+export type AppendToResponseMediaType =
+  | 'movie'
+  | 'tvShow'
+  | 'person'
+  | 'tvEpisode';
 
 export type AppendToResponse<
   K,
@@ -106,7 +120,11 @@ export type AppendToResponse<
     ? object
     : T extends Array<unknown>
     ? ('credits' extends T[number]
-        ? { credits: Omit<Credits, 'id'> }
+        ? {
+            credits: Media extends 'tvEpisode'
+              ? TvEpisodeCredit
+              : Omit<Credits, 'id'>;
+          }
         : object) &
         ('videos' extends T[number] ? { videos: Omit<Videos, 'id'> } : object) &
         ('images' extends T[number]
@@ -157,7 +175,11 @@ export type AppendToResponse<
         ('translations' extends T[number]
           ? {
               translations: Omit<
-                Media extends 'person' ? PersonTranslations : Translations,
+                Media extends 'person'
+                  ? PersonTranslations
+                  : Media extends 'tvEpisode'
+                  ? TvEpisodeTranslations
+                  : Translations,
                 'id'
               >;
             }