diff --git a/LocalFlowPlugins/utility/finalizeMedia/1.0.0/index.js b/LocalFlowPlugins/utility/finalizeMedia/1.0.0/index.js
index 4507784..515dbe3 100644
--- a/LocalFlowPlugins/utility/finalizeMedia/1.0.0/index.js
+++ b/LocalFlowPlugins/utility/finalizeMedia/1.0.0/index.js
@@ -25,12 +25,67 @@ const details = () => ({
       inputUI: { type: 'dropdown', options: ['true', 'false'] },
       tooltip: 'Remove the original source directory only when it is empty.',
     },
+    {
+      label: 'Remove Empty Parent Series Directory',
+      name: 'removeEmptyParentSeriesDir',
+      type: 'boolean',
+      defaultValue: 'true',
+      inputUI: { type: 'dropdown', options: ['true', 'false'] },
+      tooltip: 'If the removed source directory was a season folder, also remove the parent series directory if it is empty.',
+    },
   ],
   outputs: [{ number: 1, tooltip: 'Finalization complete' }],
 });
 
 const LANGUAGE_CODES = { it: 'ita', en: 'eng' };
 
+const IGNORED_JUNK_FILES = new Set([
+  '.ds_store',
+  'thumbs.db',
+  'desktop.ini',
+  'ehthumbs.db',
+  'ehthumbs_vista.db',
+]);
+
+const SEASON_DIR_REGEX = /^(season|stagione|staffel|saison|s)?\s*\d+$/i;
+const SPECIALS_DIR_REGEX = /^(specials?|extras?)$/i;
+
+const isSeasonDirectory = (dirName) => {
+  const trimmed = (dirName || '').trim();
+  return SEASON_DIR_REGEX.test(trimmed) || SPECIALS_DIR_REGEX.test(trimmed);
+};
+
+const isDirEmptyIgnoringJunk = (dirPath) => {
+  if (!fs.existsSync(dirPath)) return false;
+  try {
+    const entries = fs.readdirSync(dirPath);
+    const significant = entries.filter((e) => !IGNORED_JUNK_FILES.has(e.toLowerCase()));
+    return significant.length === 0;
+  } catch (_) {
+    return false;
+  }
+};
+
+const removeDirAndJunk = (dirPath, jobLog) => {
+  if (!fs.existsSync(dirPath)) return false;
+  try {
+    const entries = fs.readdirSync(dirPath);
+    for (const entry of entries) {
+      if (IGNORED_JUNK_FILES.has(entry.toLowerCase())) {
+        try {
+          fs.unlinkSync(path.join(dirPath, entry));
+        } catch (_) {}
+      }
+    }
+    fs.rmdirSync(dirPath);
+    if (jobLog) jobLog(`[finalizeMedia] Removed empty directory: ${dirPath}\n`);
+    return true;
+  } catch (err) {
+    if (jobLog) jobLog(`[finalizeMedia] Could not remove directory ${dirPath}: ${err.message}\n`);
+    return false;
+  }
+};
+
 const normalizeSubtitleParts = (parts) => {
   const normalized = [];
   for (const part of parts) {
@@ -65,6 +120,11 @@ const normalizeSubtitleName = (fileName) => {
   return `${prefix.concat(suffix).join('.')}${ext}`;
 };
 
+const isMediaSubtitle = (fileName, mediaBaseName) => {
+  if (!/\.srt$/i.test(fileName)) return false;
+  return fileName.toLowerCase().startsWith(`${mediaBaseName.toLowerCase()}.`);
+};
+
 const subtitleKey = (fileName) => {
   const stem = fileName.slice(0, -path.extname(fileName).length);
   return stem.replace(/_chapters(?=\.|$)/i, '').toLowerCase();
@@ -116,8 +176,9 @@ const plugin = async (args) => {
     throw new Error(`[finalizeMedia] Final directory does not exist: ${finalDir}`);
   }
 
+  // Filter only subtitles that belong to this specific media/episode file
   const files = fs.readdirSync(finalDir)
-    .filter((file) => /\.srt$/i.test(file))
+    .filter((file) => isMediaSubtitle(file, mediaBaseName))
     .map((file) => ({ file, fullPath: path.join(finalDir, file) }));
 
   for (const entry of files) {
@@ -137,9 +198,10 @@ const plugin = async (args) => {
     entry.fullPath = destination;
   }
 
+  // Group and deduplicate only subtitles belonging to this specific media file
   const grouped = new Map();
   for (const entry of fs.readdirSync(finalDir)
-    .filter((file) => /\.srt$/i.test(file))
+    .filter((file) => isMediaSubtitle(file, mediaBaseName))
     .map((file) => ({ file, fullPath: path.join(finalDir, file) }))) {
     const key = subtitleKey(entry.file);
     if (!grouped.has(key)) grouped.set(key, []);
@@ -191,15 +253,31 @@ const plugin = async (args) => {
     jobLog(`[finalizeMedia] Renamed chapter XML: ${entry.file} -> ${path.basename(canonicalChapter)}\n`);
   }
 
-  if ((args.inputs.removeEmptySourceDir || 'true') === 'true'
-      && sourceDir && path.resolve(sourceDir) !== path.resolve(finalDir)
+  // Remove source directory when empty (e.g. when transcoding from a staging/ingest directory).
+  // For series (where sourceDir is e.g. Season 01), it will only be removed when the last episode is processed.
+  // When the season folder is removed, if the parent Series directory is also empty, it is also cleaned up.
+  const removeEmptySourceDir = (args.inputs.removeEmptySourceDir || 'true') === 'true';
+  const removeEmptyParentSeriesDir = (args.inputs.removeEmptyParentSeriesDir || 'true') === 'true';
+
+  if (removeEmptySourceDir
+      && sourceDir
+      && path.resolve(sourceDir) !== path.resolve(finalDir)
       && fs.existsSync(sourceDir)) {
-    const remaining = fs.readdirSync(sourceDir);
-    if (remaining.length === 0) {
-      fs.rmdirSync(sourceDir);
-      jobLog(`[finalizeMedia] Removed empty source directory: ${sourceDir}\n`);
+    if (isDirEmptyIgnoringJunk(sourceDir)) {
+      const isSeason = isSeasonDirectory(path.basename(sourceDir));
+      const parentDir = path.dirname(sourceDir);
+
+      const removed = removeDirAndJunk(sourceDir, jobLog);
+      if (removed && isSeason && removeEmptyParentSeriesDir) {
+        if (parentDir && parentDir !== sourceDir && isDirEmptyIgnoringJunk(parentDir)) {
+          const grandParent = path.dirname(parentDir);
+          if (grandParent && grandParent !== parentDir) {
+            removeDirAndJunk(parentDir, jobLog);
+          }
+        }
+      }
     } else {
-      jobLog(`[finalizeMedia] Source directory is not empty; keeping it: ${sourceDir}\n`);
+      jobLog(`[finalizeMedia] Source directory is not empty (contains other episodes/files); keeping it: ${sourceDir}\n`);
     }
   }
 
diff --git a/tests/test-cases/test-copy-and-subtitles.js b/tests/test-cases/test-copy-and-subtitles.js
index ab73502..8f7e04d 100644
--- a/tests/test-cases/test-copy-and-subtitles.js
+++ b/tests/test-cases/test-copy-and-subtitles.js
@@ -130,7 +130,82 @@ async function testCopyAndSubtitles() {
     assert(!fs.existsSync(path.join(libraryDir, 'Movie.eng.sdh.default.srt')), 'eng.sdh.default.srt was renamed');
     assert(fs.existsSync(path.join(libraryDir, 'Movie.eng.sdh.srt')), 'eng.sdh.srt exists (default stripped)');
 
-    console.log('\n=== ALL COPY, MOVE & SUBTITLE TESTS PASSED ===\n');
+    // 5. Test TV Series: Multi-episode sidecar isolation & empty Season/Series directory cleanup
+    const stagingRoot = path.join(tmpDir, 'staging');
+    const seriesSourceDir = path.join(stagingRoot, 'Halo', 'Season 01');
+    fs.mkdirSync(seriesSourceDir, { recursive: true });
+
+    const finalSeasonDir = path.join(tmpDir, 'final_library', 'Halo', 'Season 01');
+    fs.mkdirSync(finalSeasonDir, { recursive: true });
+
+    // In finalSeasonDir, put Episode 1 and Episode 2 with their sidecars
+    const ep1File = path.join(finalSeasonDir, 'Halo - S01E01.mkv');
+    const ep2File = path.join(finalSeasonDir, 'Halo - S01E02.mkv');
+    fs.writeFileSync(ep1File, Buffer.alloc(100));
+    fs.writeFileSync(ep2File, Buffer.alloc(100));
+
+    // Sidecars for Ep1 (to be normalized when Ep1 is finalized)
+    fs.writeFileSync(path.join(finalSeasonDir, 'Halo - S01E01.ita.forced.srt'), 'ep1 sub');
+    fs.writeFileSync(path.join(finalSeasonDir, 'Halo - S01E01_chapters.xml'), '<chapters/>');
+
+    // Sidecars for Ep2 (should NOT be touched when Ep1 is finalized!)
+    fs.writeFileSync(path.join(finalSeasonDir, 'Halo - S01E02.eng.forced.default.srt'), 'ep2 sub');
+    fs.writeFileSync(path.join(finalSeasonDir, 'Halo - S01E02_chapters.xml'), '<chapters ep2/>');
+
+    // In source directory, simulate that Ep2 is still waiting in staging
+    fs.writeFileSync(path.join(seriesSourceDir, 'Halo - S01E02.mkv'), Buffer.alloc(100));
+
+    const finalizeEp1Args = {
+      inputFileObj: {
+        _id: ep1File,
+        ffProbeData: { streams: [] },
+      },
+      variables: { originalLibraryDir: seriesSourceDir },
+      inputs: { removeEmptySourceDir: 'true', removeEmptyParentSeriesDir: 'true' },
+      jobLog: () => {},
+    };
+
+    await finalizePlugin(finalizeEp1Args);
+
+    // Ep1 sidecars were processed
+    assert(fs.existsSync(path.join(finalSeasonDir, 'Halo - S01E01.ita.forced.default.srt')), 'Ep1 subtitle normalized to .default');
+    assert(fs.existsSync(path.join(finalSeasonDir, 'Halo - S01E01_chapters.xml')), 'Ep1 chapters intact');
+
+    // Ep2 sidecars were COMPLETELY UNTOUCHED!
+    assert(fs.existsSync(path.join(finalSeasonDir, 'Halo - S01E02.eng.forced.default.srt')), 'Ep2 subtitle was untouched when Ep1 was finalized');
+    assert(fs.existsSync(path.join(finalSeasonDir, 'Halo - S01E02_chapters.xml')), 'Ep2 chapters untouched');
+
+    // Source season directory was NOT removed because Ep2 was still in staging
+    assert(fs.existsSync(seriesSourceDir), 'Source Season 01 directory kept while Ep2 remains');
+
+    // Now simulate Ep2 finishing and removing from staging, leaving only a junk file (e.g. Thumbs.db)
+    fs.unlinkSync(path.join(seriesSourceDir, 'Halo - S01E02.mkv'));
+    fs.writeFileSync(path.join(seriesSourceDir, 'Thumbs.db'), 'junk');
+    // Also put a junk file in parent series folder
+    fs.writeFileSync(path.join(stagingRoot, 'Halo', 'desktop.ini'), 'junk');
+
+    const finalizeEp2Args = {
+      inputFileObj: {
+        _id: ep2File,
+        ffProbeData: { streams: [] },
+      },
+      variables: { originalLibraryDir: seriesSourceDir },
+      inputs: { removeEmptySourceDir: 'true', removeEmptyParentSeriesDir: 'true' },
+      jobLog: () => {},
+    };
+
+    await finalizePlugin(finalizeEp2Args);
+
+    // Ep2 subtitle normalized now
+    assert(fs.existsSync(path.join(finalSeasonDir, 'Halo - S01E02.eng.forced.srt')), 'Ep2 subtitle normalized when Ep2 was finalized');
+    assert(!fs.existsSync(path.join(finalSeasonDir, 'Halo - S01E02.eng.forced.default.srt')), 'Ep2 default stripped');
+
+    // Season 01 and parent Halo directory removed, but stagingRoot (library root) preserved
+    assert(!fs.existsSync(seriesSourceDir), 'Empty Season 01 directory removed');
+    assert(!fs.existsSync(path.join(stagingRoot, 'Halo')), 'Empty Series directory removed');
+    assert(fs.existsSync(stagingRoot), 'Staging root directory preserved');
+
+    console.log('\n=== ALL COPY, MOVE, SUBTITLE & SERIES TESTS PASSED ===\n');
   } finally {
     fs.rmSync(tmpDir, { recursive: true, force: true });
   }