diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc0a4c0..24e4bea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,22 @@
 # Changelog
 
+## 0.1.2 - 2026-08-16
+
+### Added
+
+- List every concrete item MDBList could not match directly below the sync
+  status, including title, TMDB/TVDB ID, and IMDb ID when available.
+- Identify exact items after a partial `not_found` response by performing one
+  conditional, paginated list read.
+
+### Optimized
+
+- Do not perform an extra verification request when MDBList accepts every
+  item, rejects none, or rejects all attempted items. When all attempted items
+  are rejected, Listarr already knows their identities from the request.
+- Never use one lookup request per title. Partial failures require at most one
+  additional list traversal (one request per 1000 list items).
+
 ## 0.1.1 - 2026-08-16
 
 ### Fixed
diff --git a/README.md b/README.md
index 5c09250..f78d042 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,7 @@ The original and modified work are distributed under the MIT License. See
 - Incremental add/remove synchronization
 - Append (`--cat`), wipe, filtering, dry-run, and cursor pagination
 - Actual added, removed, existing, and not-found result reporting
+- Detailed title and provider-ID output for items MDBList cannot match
 - Rate-limit handling using MDBList's `Retry-After` response header
 - No Trakt credentials or Trakt API calls
 
@@ -96,15 +97,34 @@ After a real synchronization, Listarr reports both planned and accepted
 changes. For example:
 
 ```text
-[Sonarr] SYNCED -> MDBList 201379
-  Selected: 950  Added: 933/950  Removed: 0/0  Existing: 0  Not found: 17
+[Sonarr] SYNCED -> MDBList 12345
+  Selected: 100  Added: 97/100  Removed: 0/0  Existing: 0  Not found: 3
   Warning: MDBList could not match some provider IDs; those entries were not added or removed.
+  Not found items:
+    - Example rejected show [TVDB: 123456, IMDb: tt1234567]
+    - Example without IMDb [TVDB: 234567]
 ```
 
 `Not found` means MDBList could not match the supplied TMDB, TVDB, or IMDb ID.
 These entries remain absent from the destination list and are not counted as
 successfully added.
 
+### API request behavior for not-found details
+
+MDBList may return only a count for `not_found`, without the corresponding
+titles or IDs. Listarr keeps request usage low while still producing exact
+details:
+
+- no `not_found`: no additional verification request;
+- every attempted item is `not_found`: no additional request, because Listarr
+  already knows all rejected request items;
+- partial `not_found`: one additional paginated list traversal identifies the
+  exact rejected items;
+- no per-title lookup requests are used.
+
+MDBList pages contain up to 1000 items, so a destination with at most 1000
+items needs at most one additional `GET` for a partial failure.
+
 ## Synchronization safety
 
 Normal synchronization removes stale entries only from the media type being
diff --git a/pyproject.toml b/pyproject.toml
index c9e44ad..83d78d7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "listarr"
-version = "0.1.1"
+version = "0.1.2"
 description = "Synchronize Radarr and Sonarr libraries to private MDBList lists"
 readme = "README.md"
 requires-python = ">=3.10"
diff --git a/src/listarr/__init__.py b/src/listarr/__init__.py
index 7ceb511..5c6b338 100644
--- a/src/listarr/__init__.py
+++ b/src/listarr/__init__.py
@@ -5,6 +5,6 @@
 try:
     __version__ = version("listarr")
 except PackageNotFoundError:  # pragma: no cover - source tree without install
-    __version__ = "0.1.1"
+    __version__ = "0.1.2"
 
 __all__ = ["__version__"]
diff --git a/src/listarr/api/mdblist.py b/src/listarr/api/mdblist.py
index 9505190..14a97a4 100644
--- a/src/listarr/api/mdblist.py
+++ b/src/listarr/api/mdblist.py
@@ -9,13 +9,14 @@
 import requests
 
 from listarr.errors import APIError, RateLimitError
-from listarr.models import MediaItem, SyncResult
+from listarr.models import MediaItem, NotFoundItem, SyncResult
 
 
 @dataclass(frozen=True)
 class ExistingItem:
     provider_id: int | None
     imdb_id: str | None
+    title: str | None = None
 
 
 class MDBListClient:
@@ -188,6 +189,7 @@ def get_items(self, list_id: int, source: str) -> list[ExistingItem]:
                             int(provider_id) if provider_id is not None else None
                         ),
                         imdb_id=imdb_id,
+                        title=item.get("title") or None,
                     )
                 )
 
@@ -236,6 +238,66 @@ def _response_count(response: dict[str, Any], field: str, bucket: str) -> int:
             return len(value)
         return 0
 
+    @staticmethod
+    def _present(
+        provider_id: int | None,
+        imdb_id: str | None,
+        provider_ids: set[int],
+        imdb_ids: set[str],
+    ) -> bool:
+        return (provider_id is not None and provider_id in provider_ids) or (
+            imdb_id is not None and imdb_id in imdb_ids
+        )
+
+    def _identify_not_found(
+        self,
+        *,
+        list_id: int,
+        source: str,
+        provider: str,
+        additions: Sequence[MediaItem],
+        removals: Sequence[ExistingItem],
+    ) -> tuple[NotFoundItem, ...]:
+        updated = self.get_items(list_id, source)
+        provider_ids = {
+            item.provider_id for item in updated if item.provider_id is not None
+        }
+        imdb_ids = {item.imdb_id for item in updated if item.imdb_id}
+        missing: list[NotFoundItem] = []
+
+        for item in additions:
+            if not self._present(
+                item.provider_id, item.imdb_id, provider_ids, imdb_ids
+            ):
+                missing.append(
+                    NotFoundItem(
+                        title=item.title,
+                        provider=provider,
+                        provider_id=item.provider_id,
+                        imdb_id=item.imdb_id,
+                    )
+                )
+
+        for item in removals:
+            if self._present(
+                item.provider_id, item.imdb_id, provider_ids, imdb_ids
+            ):
+                missing.append(
+                    NotFoundItem(
+                        title=item.title or "Existing list item",
+                        provider=provider,
+                        provider_id=item.provider_id,
+                        imdb_id=item.imdb_id,
+                    )
+                )
+
+        # A provider and IMDb ID may both identify the same item. Preserve API
+        # order while avoiding duplicate status lines.
+        unique: dict[tuple[int | None, str | None], NotFoundItem] = {}
+        for item in missing:
+            unique.setdefault((item.provider_id, item.imdb_id), item)
+        return tuple(unique.values())
+
     def sync(
         self,
         *,
@@ -262,6 +324,7 @@ def sync(
         current_imdb = {item.imdb_id for item in current if item.imdb_id}
 
         additions = []
+        addition_items: list[MediaItem] = []
         for item in items:
             already_present = item.provider_id in current_provider or (
                 item.imdb_id is not None and item.imdb_id in current_imdb
@@ -271,8 +334,10 @@ def sync(
                 if item.imdb_id:
                     payload["imdb"] = item.imdb_id
                 additions.append(payload)
+                addition_items.append(item)
 
         removals = []
+        removal_items: list[ExistingItem] = []
         if not concatenate:
             for item in current:
                 still_wanted = (
@@ -284,6 +349,7 @@ def sync(
                         removals.append({provider: item.provider_id})
                     elif item.imdb_id:
                         removals.append({"imdb": item.imdb_id})
+                    removal_items.append(item)
 
         remove_result = {
             "added": 0,
@@ -292,10 +358,61 @@ def sync(
             "not_found": 0,
         }
         add_result = remove_result.copy()
+        not_found_items: tuple[NotFoundItem, ...] = ()
         if not dry_run:
             assert list_id is not None
             remove_result = self._modify(list_id, "remove", bucket, removals)
             add_result = self._modify(list_id, "add", bucket, additions)
+            if add_result["not_found"] or remove_result["not_found"]:
+                all_additions_failed = (
+                    add_result["not_found"] == len(addition_items)
+                    and add_result["added"] == 0
+                    and add_result["existing"] == 0
+                )
+                all_removals_failed = (
+                    remove_result["not_found"] == len(removal_items)
+                    and remove_result["removed"] == 0
+                )
+                add_outcome_known = (
+                    add_result["not_found"] == 0 or all_additions_failed
+                )
+                remove_outcome_known = (
+                    remove_result["not_found"] == 0 or all_removals_failed
+                )
+
+                if add_outcome_known and remove_outcome_known:
+                    known_missing = [
+                        NotFoundItem(
+                            title=item.title,
+                            provider=provider,
+                            provider_id=item.provider_id,
+                            imdb_id=item.imdb_id,
+                        )
+                        for item in addition_items
+                        if all_additions_failed
+                    ]
+                    known_missing.extend(
+                        NotFoundItem(
+                            title=item.title or "Existing list item",
+                            provider=provider,
+                            provider_id=item.provider_id,
+                            imdb_id=item.imdb_id,
+                        )
+                        for item in removal_items
+                        if all_removals_failed
+                    )
+                    not_found_items = tuple(known_missing)
+                else:
+                    # MDBList returned only aggregate counts for a partial
+                    # failure. One conditional list read is the lowest-call
+                    # way to identify the exact items reliably.
+                    not_found_items = self._identify_not_found(
+                        list_id=list_id,
+                        source=source,
+                        provider=provider,
+                        additions=addition_items,
+                        removals=removal_items,
+                    )
 
         return SyncResult(
             source=source,
@@ -310,6 +427,7 @@ def sync(
                 add_result["not_found"] + remove_result["not_found"]
             ),
             dry_run=dry_run,
+            not_found_items=not_found_items,
         )
 
     def close(self) -> None:
diff --git a/src/listarr/cli.py b/src/listarr/cli.py
index 1556e16..1882add 100644
--- a/src/listarr/cli.py
+++ b/src/listarr/cli.py
@@ -160,6 +160,18 @@ def _display(result: SyncResult, list_name: str) -> None:
             "  Warning: MDBList could not match some provider IDs; "
             "those entries were not added or removed."
         )
+        if result.not_found_items:
+            print("  Not found items:")
+            for item in result.not_found_items:
+                identifiers = []
+                if item.provider_id is not None:
+                    identifiers.append(
+                        f"{item.provider.upper()}: {item.provider_id}"
+                    )
+                if item.imdb_id:
+                    identifiers.append(f"IMDb: {item.imdb_id}")
+                suffix = f" [{', '.join(identifiers)}]" if identifiers else ""
+                print(f"    - {item.title}{suffix}")
 
 
 def run(args: argparse.Namespace) -> int:
diff --git a/src/listarr/models.py b/src/listarr/models.py
index a88039d..cc60e02 100644
--- a/src/listarr/models.py
+++ b/src/listarr/models.py
@@ -24,6 +24,14 @@ class MediaItem:
     genres: tuple[str, ...]
 
 
+@dataclass(frozen=True)
+class NotFoundItem:
+    title: str
+    provider: str
+    provider_id: int | None
+    imdb_id: str | None
+
+
 @dataclass(frozen=True)
 class SyncResult:
     source: str
@@ -36,3 +44,4 @@ class SyncResult:
     existing: int
     not_found: int
     dry_run: bool
+    not_found_items: tuple[NotFoundItem, ...] = ()
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 40cee89..ba9b9f7 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -1,5 +1,5 @@
 from listarr.cli import _display, build_parser, main
-from listarr.models import SyncResult
+from listarr.models import NotFoundItem, SyncResult
 
 
 def test_cli_keeps_familiar_source_flags():
@@ -28,23 +28,41 @@ def test_cli_displays_actual_not_found_result(capsys):
     _display(
         SyncResult(
             source="Sonarr",
-            list_id=201379,
-            selected=950,
-            planned_add=950,
+            list_id=12345,
+            selected=100,
+            planned_add=100,
             planned_remove=0,
-            added=933,
+            added=98,
             removed=0,
             existing=0,
-            not_found=17,
+            not_found=2,
             dry_run=False,
+            not_found_items=(
+                NotFoundItem(
+                    title="Rejected show",
+                    provider="tvdb",
+                    provider_id=123,
+                    imdb_id="tt123",
+                ),
+                NotFoundItem(
+                    title="Rejected without IMDb",
+                    provider="tvdb",
+                    provider_id=456,
+                    imdb_id=None,
+                ),
+            ),
         ),
         "sonarr",
     )
 
     output = capsys.readouterr().out
-    assert "Added: 933/950" in output
-    assert "Not found: 17" in output
+    assert "Added: 98/100" in output
+    assert "Not found: 2" in output
     assert "Warning:" in output
+    assert "Not found items:" in output
+    assert "Rejected show [TVDB: 123, IMDb: tt123]" in output
+    assert "Rejected without IMDb [TVDB: 456]" in output
+    assert output.index("Not found: 2") < output.index("Rejected show")
 
 
 def test_cli_displays_planned_dry_run_counts(capsys):
diff --git a/tests/test_mdblist.py b/tests/test_mdblist.py
index f68486e..2190c06 100644
--- a/tests/test_mdblist.py
+++ b/tests/test_mdblist.py
@@ -180,19 +180,68 @@ def test_sync_reports_actual_added_existing_and_not_found_counts():
                 "not_found": {"shows": 1},
             }
         ),
+        FakeResponse(
+            {
+                "shows": [
+                    {
+                        "title": "Accepted",
+                        "tvdb_id": 100,
+                        "imdb_id": "tt100",
+                    }
+                ],
+                "pagination": {},
+            }
+        ),
     )
     client = MDBListClient("secret", session=session)
 
     result = client.sync(
         source="Sonarr",
         list_id=5,
-        items=[media(100, "tt100"), media(200, "tt200")],
+        items=[
+            media(100, "tt100", "Accepted"),
+            media(200, "tt200", "Rejected"),
+        ],
     )
 
     assert result.planned_add == 2
     assert result.added == 1
     assert result.existing == 0
     assert result.not_found == 1
+    assert [item.title for item in result.not_found_items] == ["Rejected"]
+    assert result.not_found_items[0].provider == "tvdb"
+    assert len(session.calls) == 3
+
+
+def test_all_additions_not_found_are_known_without_extra_list_request():
+    session = FakeSession()
+    session.queue(
+        FakeResponse({"shows": [], "pagination": {}}),
+        FakeResponse(
+            {
+                "added": {"shows": 0},
+                "existing": {"shows": 0},
+                "not_found": {"shows": 2},
+            }
+        ),
+    )
+    client = MDBListClient("secret", session=session)
+
+    result = client.sync(
+        source="Sonarr",
+        list_id=5,
+        items=[
+            media(100, "tt100", "First rejected"),
+            media(200, None, "Second rejected"),
+        ],
+    )
+
+    assert result.not_found == 2
+    assert [item.title for item in result.not_found_items] == [
+        "First rejected",
+        "Second rejected",
+    ]
+    assert len(session.calls) == 2
 
 
 def test_modification_counts_are_aggregated_across_batches():