diff --git a/client/components/app/BookShelfToolbar.vue b/client/components/app/BookShelfToolbar.vue
index 94e095c7..8e0cb18c 100644
--- a/client/components/app/BookShelfToolbar.vue
+++ b/client/components/app/BookShelfToolbar.vue
@@ -159,6 +159,7 @@ export default {
       }
 
       this.addSubtitlesMenuItem(items)
+      this.addCollapseSubSeriesMenuItem(items)
 
       return items
     },
@@ -371,6 +372,21 @@ export default {
         }
       }
     },
+    addCollapseSubSeriesMenuItem(items) {
+      if (this.selectedSeries && this.isBookLibrary && !this.isBatchSelecting) {
+        if (this.settings.collapseBookSeries) {
+          items.push({
+            text: this.$strings.LabelExpandSubSeries,
+            action: 'expand-sub-series'
+          })
+        } else {
+          items.push({
+            text: this.$strings.LabelCollapseSubSeries,
+            action: 'collapse-sub-series'
+          })
+        }
+      }
+    },
     handleSubtitlesAction(action) {
       if (action === 'show-subtitles') {
         this.settings.showSubtitles = true
@@ -397,6 +413,19 @@ export default {
       }
       return false
     },
+    handleCollapseSubSeriesAction(action) {
+      if (action === 'collapse-sub-series') {
+        this.settings.collapseBookSeries = true
+        this.updateCollapseSubSeries()
+        return true
+      }
+      if (action === 'expand-sub-series') {
+        this.settings.collapseBookSeries = false
+        this.updateCollapseSubSeries()
+        return true
+      }
+      return false
+    },
     contextMenuAction({ action }) {
       if (action === 'export-opml') {
         this.exportOPML()
@@ -427,6 +456,8 @@ export default {
         this.markSeriesFinished()
       } else if (this.handleSubtitlesAction(action)) {
         return
+      } else if (this.handleCollapseSubSeriesAction(action)) {
+        return
       }
     },
     showOpenSeriesRSSFeed() {
@@ -553,7 +584,7 @@ export default {
     updateCollapseSeries() {
       this.saveSettings()
     },
-    updateCollapseBookSeries() {
+    updateCollapseSubSeries() {
       this.saveSettings()
     },
     updateShowSubtitles() {
diff --git a/client/strings/en-us.json b/client/strings/en-us.json
index a8740b14..84e31678 100644
--- a/client/strings/en-us.json
+++ b/client/strings/en-us.json
@@ -246,6 +246,7 @@
   "LabelClosePlayer": "Close player",
   "LabelCodec": "Codec",
   "LabelCollapseSeries": "Collapse Series",
+  "LabelCollapseSubSeries": "Collapse Sub Series",
   "LabelCollection": "Collection",
   "LabelCollections": "Collections",
   "LabelComplete": "Complete",
@@ -298,6 +299,7 @@
   "LabelEpisodeType": "Episode Type",
   "LabelExample": "Example",
   "LabelExpandSeries": "Expand Series",
+  "LabelExpandSubSeries": "Expand Sub Series",
   "LabelExplicit": "Explicit",
   "LabelExplicitChecked": "Explicit (checked)",
   "LabelExplicitUnchecked": "Not Explicit (unchecked)",