diff --git a/server/objects/AudioFileMetadata.js b/server/objects/AudioFileMetadata.js
index 615578f9..bd47538c 100644
--- a/server/objects/AudioFileMetadata.js
+++ b/server/objects/AudioFileMetadata.js
@@ -4,6 +4,8 @@ class AudioFileMetadata {
     this.tagArtist = null
     this.tagGenre = null
     this.tagTitle = null
+    this.tagSeries = null
+    this.tagSeriesPart = null
     this.tagTrack = null
     this.tagSubtitle = null
     this.tagAlbumArtist = null
@@ -36,6 +38,8 @@ class AudioFileMetadata {
     this.tagArtist = metadata.tagArtist || null
     this.tagGenre = metadata.tagGenre || null
     this.tagTitle = metadata.tagTitle || null
+    this.tagSeries = metadata.tagSeries || null
+    this.tagSeriesPart = metadata.tagSeriesPart || null
     this.tagTrack = metadata.tagTrack || null
     this.tagSubtitle = metadata.tagSubtitle || null
     this.tagAlbumArtist = metadata.tagAlbumArtist || null
@@ -54,6 +58,8 @@ class AudioFileMetadata {
     this.tagArtist = payload.file_tag_artist || null
     this.tagGenre = payload.file_tag_genre || null
     this.tagTitle = payload.file_tag_title || null
+    this.tagSeries = payload.file_tag_series || null
+    this.tagSeriesPart = payload.file_tag_seriespart || null
     this.tagTrack = payload.file_tag_track || null
     this.tagSubtitle = payload.file_tag_subtitle || null
     this.tagAlbumArtist = payload.file_tag_albumartist || null
@@ -72,6 +78,8 @@ class AudioFileMetadata {
       tagArtist: payload.file_tag_artist || null,
       tagGenre: payload.file_tag_genre || null,
       tagTitle: payload.file_tag_title || null,
+      tagSeries: payload.file_tag_series || null,
+      tagSeriesPart: payload.file_tag_seriespart || null,
       tagTrack: payload.file_tag_track || null,
       tagSubtitle: payload.file_tag_subtitle || null,
       tagAlbumArtist: payload.file_tag_albumartist || null,
diff --git a/server/objects/Book.js b/server/objects/Book.js
index 7a80ec5c..295682b4 100644
--- a/server/objects/Book.js
+++ b/server/objects/Book.js
@@ -275,10 +275,19 @@ class Book {
       {
         tag: 'tagGenre',
         key: 'genres'
+      },
+      {
+        tag: 'tagSeries',
+        key: 'series'
+      },
+      {
+        tag: 'tagSeriesPart',
+        key: 'volumeNumber'
       }
     ]
 
     var updatePayload = {}
+    // Metadata is only mapped to the book if it is empty
     MetadataMapArray.forEach((mapping) => {
       if (audioFileMetadata[mapping.tag]) {
         // Genres can contain multiple
diff --git a/server/utils/prober.js b/server/utils/prober.js
index 7db7eedb..eec75d13 100644
--- a/server/utils/prober.js
+++ b/server/utils/prober.js
@@ -157,6 +157,8 @@ function parseTags(format, verbose) {
     file_tag_comment: tryGrabTags(format, 'comment', 'comm', 'com'),
     file_tag_description: tryGrabTags(format, 'description', 'desc'),
     file_tag_genre: tryGrabTags(format, 'genre', 'tcon', 'tco'),
+    file_tag_series: tryGrabTag(format, 'series'),
+    file_tag_seriespart: tryGrabTag(format, 'series-part'),
 
     // Not sure if these are actually used yet or not
     file_tag_creation_time: tryGrabTag(format, 'creation_time'),
@@ -165,8 +167,6 @@ function parseTags(format, verbose) {
     file_tag_releasetime: tryGrabTags(format, 'releasetime', 'tdrl'),
     file_tag_movementname: tryGrabTags(format, 'movementname', 'mvnm'),
     file_tag_movement: tryGrabTags(format, 'movement', 'mvin'),
-    file_tag_series: tryGrabTag(format, 'series'),
-    file_tag_seriespart: tryGrabTag(format, 'series-part'),
     file_tag_genre1: tryGrabTags(format, 'tmp_genre1', 'genre1'),
     file_tag_genre2: tryGrabTags(format, 'tmp_genre2', 'genre2'),
   }
@@ -176,11 +176,12 @@ function parseTags(format, verbose) {
     }
   }
 
-  var keysToLookOutFor = ['file_tag_genre1', 'file_tag_genre2', 'file_tag_genre', 'file_tag_series', 'file_tag_seriespart', 'file_tag_movement', 'file_tag_movementname', 'file_tag_wwwaudiofile', 'file_tag_contentgroup', 'file_tag_releasetime']
-  var success = keysToLookOutFor.find(key => !!tags[key])
-  if (success) {
-    Logger.debug('Notable!', success)
-  }
+  var keysToLookOutFor = ['file_tag_genre1', 'file_tag_genre2', 'file_tag_series', 'file_tag_seriespart', 'file_tag_movement', 'file_tag_movementname', 'file_tag_wwwaudiofile', 'file_tag_contentgroup', 'file_tag_releasetime']
+  keysToLookOutFor.forEach((key) => {
+    if (tags[key]) {
+      Logger.debug(`Notable! ${key} => ${tags[key]}`)
+    }
+  })
   return tags
 }