diff --git a/public/app.js b/public/app.js
index b235216..3a1abaa 100644
--- a/public/app.js
+++ b/public/app.js
@@ -482,6 +482,8 @@ function renderCard() {
   $("card-overview").textContent = card.overview || "";
   $("trailer-btn").classList.remove("hidden");
   $("trailer-btn").onclick = () => openTrailer(card.tmdb_id);
+  $("details-btn").classList.remove("hidden");
+  $("details-btn").onclick = () => openDetails(card);
   renderRatings(card.tmdb_id, "card-rating");
 }
 
@@ -541,8 +543,8 @@ function setupGestures() {
   const el = $("card");
   let drag = null;
   el.addEventListener("pointerdown", (e) => {
-    if (el.classList.contains("hidden") || e.target.closest("#trailer-btn")) return;
-    drag = { x: e.clientX, y: e.clientY, dx: 0 };
+    if (el.classList.contains("hidden") || e.target.closest("button")) return;
+    drag = { x: e.clientX, y: e.clientY, dx: 0, moved: false };
     el.setPointerCapture(e.pointerId);
     el.style.transition = "none";
   });
@@ -550,6 +552,7 @@ function setupGestures() {
     if (!drag) return;
     drag.dx = e.clientX - drag.x;
     const dy = e.clientY - drag.y;
+    if (!drag.moved && Math.hypot(drag.dx, dy) > 8) drag.moved = true;
     const rot = Math.max(-15, Math.min(15, drag.dx / 12));
     el.style.transform = `translate(${drag.dx}px, ${dy}px) rotate(${rot}deg)`;
     const p = Math.min(1, Math.abs(drag.dx) / SWIPE_THRESHOLD);
@@ -558,8 +561,18 @@ function setupGestures() {
   });
   const end = () => {
     if (!drag) return;
-    const dx = drag.dx;
+    const { dx, moved } = drag;
     drag = null;
+    if (!moved) {
+      // A tap (no real drag) → open the details sheet for the current card.
+      el.style.transition = "transform 0.15s ease";
+      el.style.transform = "";
+      $("stamp-like").style.opacity = 0;
+      $("stamp-nope").style.opacity = 0;
+      const card = state.deck[state.deckIndex];
+      if (card) openDetails(card);
+      return;
+    }
     if (Math.abs(dx) > SWIPE_THRESHOLD) {
       flingAndSwipe(dx > 0 ? "like" : "dislike");
     } else {
@@ -593,6 +606,70 @@ function closeTrailer() {
   $("trailer-overlay").classList.add("hidden");
 }
 
+// ── Details sheet ───────────────────────────────────────────────────────────
+async function openDetails(card) {
+  // Prefill instantly from the card we already have, then enrich from the API.
+  $("details-poster").style.backgroundImage = card.poster_path
+    ? `url(https://image.tmdb.org/t/p/w780${card.poster_path})`
+    : "none";
+  const sheet = document.querySelector(".details-sheet");
+  if (sheet) sheet.scrollTop = 0; // always open scrolled to the top
+  $("details-title").textContent = card.title || "";
+  $("details-tagline").classList.add("hidden");
+  $("details-meta").textContent = card.release_year ? String(card.release_year) : "";
+  $("details-overview").textContent = card.overview || "Loading…";
+  $("details-crew").classList.add("hidden");
+  $("details-cast").innerHTML = "";
+  $("details-trailer").onclick = () => openTrailer(card.tmdb_id);
+  renderRatings(card.tmdb_id, "details-rating");
+  $("details-overlay").classList.remove("hidden");
+
+  try {
+    const d = await api(`/api/rooms/${state.room.id}/details/${card.tmdb_id}`);
+    $("details-title").textContent = d.title || card.title || "";
+    if (d.tagline) {
+      $("details-tagline").textContent = d.tagline;
+      $("details-tagline").classList.remove("hidden");
+    }
+    const meta = [];
+    if (d.release_year) meta.push(d.release_year);
+    if (d.runtime) meta.push(d.media_type === "tv" ? `~${d.runtime} min/ep` : `${d.runtime} min`);
+    if (d.seasons) meta.push(d.seasons + (d.seasons === 1 ? " season" : " seasons"));
+    if (d.genres && d.genres.length) meta.push(d.genres.slice(0, 3).join(", "));
+    $("details-meta").textContent = meta.join("  ·  ");
+    $("details-overview").textContent = d.overview || "No description available.";
+    if (d.directors && d.directors.length) {
+      const label = (d.media_type === "tv" ? "Creator" : "Director") + (d.directors.length > 1 ? "s" : "");
+      $("details-crew").textContent = `${label}: ${d.directors.join(", ")}`;
+      $("details-crew").classList.remove("hidden");
+    }
+    const box = $("details-cast");
+    box.innerHTML = "";
+    (d.cast || []).forEach((p) => {
+      const chip = document.createElement("div");
+      chip.className = "cast-chip";
+      const photo = document.createElement("div");
+      photo.className = "cast-photo";
+      if (p.profile_path) photo.style.backgroundImage = `url(https://image.tmdb.org/t/p/w185${p.profile_path})`;
+      const name = document.createElement("div");
+      name.className = "cast-name";
+      name.textContent = p.name;
+      const role = document.createElement("div");
+      role.className = "cast-role";
+      role.textContent = p.character || "";
+      chip.appendChild(photo);
+      chip.appendChild(name);
+      chip.appendChild(role);
+      box.appendChild(chip);
+    });
+  } catch {
+    $("details-overview").textContent = card.overview || "Couldn't load details.";
+  }
+}
+function closeDetails() {
+  $("details-overlay").classList.add("hidden");
+}
+
 // ── WebSocket (live) ────────────────────────────────────────────────────────
 function connectWs() {
   if (state.soloMode) return;
@@ -935,6 +1012,10 @@ function init() {
   $("trailer-overlay").onclick = (e) => {
     if (e.target === $("trailer-overlay")) closeTrailer();
   };
+  $("details-close").onclick = closeDetails;
+  $("details-overlay").onclick = (e) => {
+    if (e.target === $("details-overlay")) closeDetails();
+  };
 
   const pendingCode = (new URLSearchParams(location.search).get("code") || "").trim().toUpperCase();
   if (state.userId && state.username) {
diff --git a/public/index.html b/public/index.html
index f5d6621..80edb91 100644
--- a/public/index.html
+++ b/public/index.html
@@ -95,7 +95,10 @@ <h3 id="card-title"></h3>
                 <p id="card-meta" class="card-sub"></p>
                 <p id="card-rating" class="rating-row"></p>
                 <p id="card-overview" class="overview"></p>
-                <button id="trailer-btn" class="trailer-btn hidden">▶ Trailer</button>
+                <div class="card-actions">
+                  <button id="details-btn" class="trailer-btn hidden">ⓘ Details</button>
+                  <button id="trailer-btn" class="trailer-btn hidden">▶ Trailer</button>
+                </div>
               </div>
             </div>
             <p id="deck-empty" class="muted hidden">That's the whole deck! 🎉 Check your matches.</p>
@@ -174,6 +177,24 @@ <h3>Enter request PIN</h3>
       </div>
     </div>
 
+    <!-- Expanded card / details (cast, director, full overview) -->
+    <div id="details-overlay" class="overlay hidden">
+      <button id="details-close" class="overlay-close" aria-label="Close">✕</button>
+      <div class="details-sheet">
+        <div id="details-poster" class="details-hero"></div>
+        <div class="details-body">
+          <h3 id="details-title"></h3>
+          <p id="details-tagline" class="details-tagline hidden"></p>
+          <p id="details-meta" class="card-sub"></p>
+          <p id="details-rating" class="rating-row"></p>
+          <p id="details-crew" class="details-crew hidden"></p>
+          <p id="details-overview" class="details-overview"></p>
+          <div id="details-cast" class="details-cast"></div>
+          <button id="details-trailer" class="trailer-btn">▶ Trailer</button>
+        </div>
+      </div>
+    </div>
+
     <!-- Trailer overlay -->
     <div id="trailer-overlay" class="overlay hidden">
       <button id="trailer-close" class="overlay-close" aria-label="Close">✕</button>
diff --git a/public/style.css b/public/style.css
index bb0801f..78e03e7 100644
--- a/public/style.css
+++ b/public/style.css
@@ -577,6 +577,80 @@ select.input {
   border-radius: 12px;
 }
 
+/* ── Details sheet ── */
+.card-actions {
+  display: flex;
+  gap: 0.5rem;
+}
+.details-sheet {
+  background: var(--surface);
+  border-radius: var(--radius);
+  width: 100%;
+  max-width: 460px;
+  max-height: 92vh;
+  overflow-y: auto;
+  overflow-x: hidden;
+  box-shadow: var(--shadow);
+  -webkit-overflow-scrolling: touch;
+}
+.details-hero {
+  width: 100%;
+  height: 48vh;
+  background-size: cover;
+  background-position: center 15%;
+  background-color: var(--surface-2);
+}
+.details-body {
+  padding: 1.1rem;
+}
+.details-body h3 {
+  margin: 0 0 0.3rem;
+}
+.details-tagline {
+  font-style: italic;
+  color: var(--muted);
+  margin: 0 0 0.4rem;
+  font-size: 0.88rem;
+}
+.details-crew {
+  margin: 0.9rem 0 0;
+  font-size: 0.9rem;
+  color: var(--muted);
+}
+.details-overview {
+  margin: 0.7rem 0 1rem;
+  line-height: 1.55;
+  font-size: 0.95rem;
+}
+.details-cast {
+  display: grid;
+  grid-template-columns: repeat(3, 1fr);
+  gap: 0.8rem;
+  margin-bottom: 1rem;
+}
+.cast-chip {
+  text-align: center;
+}
+.cast-photo {
+  width: 100%;
+  aspect-ratio: 1;
+  border-radius: 50%;
+  background-size: cover;
+  background-position: center top;
+  background-color: var(--surface-2);
+  margin-bottom: 0.35rem;
+}
+.cast-name {
+  font-size: 0.78rem;
+  font-weight: 600;
+  line-height: 1.2;
+}
+.cast-role {
+  font-size: 0.72rem;
+  line-height: 1.2;
+  color: var(--muted);
+}
+
 .attribution {
   padding: 0.75rem 0;
   font-size: 0.7rem;
diff --git a/src/routes/rooms.ts b/src/routes/rooms.ts
index 401f756..d33fc56 100644
--- a/src/routes/rooms.ts
+++ b/src/routes/rooms.ts
@@ -4,7 +4,7 @@ import { genId } from "../lib/ids";
 import { uniqueJoinCode, userExists } from "../lib/db";
 import { mapRoom } from "../lib/mappers";
 import { getDeckForUser, getCardFromDeck, resetDeck, buildMatchReason } from "../lib/deck";
-import { getWatchProviders, getImdbId, getTrailerKey } from "../services/tmdb";
+import { getWatchProviders, getImdbId, getTrailerKey, getTitleDetails } from "../services/tmdb";
 import { getOmdbRatings } from "../services/omdb";
 import { createRequest } from "../services/overseerr";
 import { rateLimit, clientIp } from "../lib/ratelimit";
@@ -332,6 +332,24 @@ rooms.patch("/:id", async (c) => {
   return c.json({ ...room, media_type: mediaType, deck: [] }, 200);
 });
 
+// GET /api/rooms/:id/details/:tmdbId — full metadata for the details view
+// (cast, director/creator, tagline, runtime, genres, full overview).
+rooms.get("/:id/details/:tmdbId", async (c) => {
+  const id = c.req.param("id");
+  const tmdbId = Number(c.req.param("tmdbId"));
+  if (!Number.isInteger(tmdbId) || tmdbId <= 0) return c.json({ error: "tmdb_id_invalid" }, 400);
+
+  const row = await c.env.DB.prepare("SELECT media_type FROM rooms WHERE id = ?")
+    .bind(id)
+    .first<Record<string, unknown>>();
+  if (!row) return c.json({ error: "room_not_found" }, 404);
+  const mediaType = String(row.media_type) === "tv" ? "tv" : "movie";
+
+  const details = await getTitleDetails(c.env, mediaType, tmdbId);
+  if (!details) return c.json({ error: "details_fetch_failed" }, 502);
+  return c.json(details, 200);
+});
+
 // GET /api/rooms/:id/providers/:tmdbId — where a title can be watched (RO).
 rooms.get("/:id/providers/:tmdbId", async (c) => {
   const id = c.req.param("id");
diff --git a/src/services/tmdb.ts b/src/services/tmdb.ts
index 23006c1..ae093d8 100644
--- a/src/services/tmdb.ts
+++ b/src/services/tmdb.ts
@@ -193,6 +193,88 @@ export async function getTitleCard(
   }
 }
 
+interface TmdbCredits {
+  cast?: { name: string; character?: string; profile_path?: string | null }[];
+  crew?: { name: string; job?: string; department?: string }[];
+}
+interface TmdbDetailFull extends TmdbDetail {
+  tagline?: string;
+  runtime?: number; // movie
+  episode_run_time?: number[]; // tv
+  number_of_seasons?: number; // tv
+  created_by?: { name: string }[]; // tv
+  credits?: TmdbCredits;
+}
+
+export interface CastMember {
+  name: string;
+  character: string | null;
+  profile_path: string | null;
+}
+export interface TitleDetails {
+  tmdb_id: number;
+  media_type: MediaType;
+  title: string;
+  tagline: string | null;
+  overview: string;
+  poster_path: string | null;
+  release_year: number | null;
+  genres: string[];
+  runtime: number | null; // minutes (movie) or per-episode (tv)
+  seasons: number | null; // tv only
+  vote_average: number | null;
+  directors: string[]; // Director(s) for movies, Creator(s) for tv
+  cast: CastMember[];
+}
+
+/** Full metadata for the details view: cast, director/creator, runtime, genres. One cached call. */
+export async function getTitleDetails(
+  env: Env,
+  mediaType: MediaType,
+  id: number,
+): Promise<TitleDetails | null> {
+  try {
+    const d = await tmdbFetch<TmdbDetailFull>(env, `/${mediaType}/${id}`, {
+      language: TMDB_LANG,
+      append_to_response: "credits",
+    });
+    const directors =
+      mediaType === "movie"
+        ? (d.credits?.crew ?? []).filter((c) => c.job === "Director").map((c) => c.name)
+        : (d.created_by ?? []).map((c) => c.name);
+    const runtime =
+      mediaType === "movie"
+        ? typeof d.runtime === "number"
+          ? d.runtime
+          : null
+        : Array.isArray(d.episode_run_time) && d.episode_run_time.length
+          ? d.episode_run_time[0]
+          : null;
+    return {
+      tmdb_id: d.id,
+      media_type: mediaType,
+      title: (mediaType === "movie" ? d.title : d.name) ?? "",
+      tagline: d.tagline?.trim() || null,
+      overview: d.overview ?? "",
+      poster_path: d.poster_path ?? null,
+      release_year: dateToYear(mediaType === "movie" ? d.release_date : d.first_air_date),
+      genres: (d.genres ?? []).map((g) => g.name),
+      runtime,
+      seasons:
+        mediaType === "tv" && typeof d.number_of_seasons === "number" ? d.number_of_seasons : null,
+      vote_average: typeof d.vote_average === "number" ? d.vote_average : null,
+      directors: [...new Set(directors)].slice(0, 3),
+      cast: (d.credits?.cast ?? []).slice(0, 12).map((c) => ({
+        name: c.name,
+        character: c.character?.trim() || null,
+        profile_path: c.profile_path ?? null,
+      })),
+    };
+  } catch {
+    return null;
+  }
+}
+
 interface TmdbProviderEntry {
   provider_id: number;
   provider_name: string;