diff --git a/actions/notes.md b/actions/notes.md
index 7985b43..f6e8024 100644
--- a/actions/notes.md
+++ b/actions/notes.md
@@ -11,9 +11,14 @@
     downloaded files with an MD5 hash that matches the provided value. This is useful for avoiding the saving of error
     pages and stub files. The `fields` member is a list of fields that should play audio when the card is displayed in
     Anki. The `allowDuplicate` member inside `options` group can be set to true to enable adding duplicate cards.
-    Normally duplicate cards can not be added and trigger exception. The `duplicateScope` member inside `options` can be
-    used to specify the scope for which duplicates are checked. A value of `"deck"` will only check for duplicates in the
-    target deck; any other value will check the entire collection.
+    Normally duplicate cards can not be added and trigger exception.
+
+    The `duplicateScope` member inside `options` can be used to specify the scope for which duplicates are checked.
+    A value of `"deckName"` will only check for duplicates in the target deck; any other value will check the entire collection.
+    The `duplicateScopeOptions` object can be used to specify some additional settings. `duplicateScopeOptions.deckName`
+    will specify which deck to use for checking duplicates in. If undefined or `null`, the target deck will be used.
+    `duplicateScopeOptions.checkChildren` will change whether or not duplicate cards are checked in child decks;
+    the default value is `false`.
 
     *Sample request*:
     ```json
@@ -30,7 +35,11 @@
                 },
                 "options": {
                     "allowDuplicate": false,
-                    "duplicateScope": "deck"
+                    "duplicateScope": "deck",
+                    "duplicateScopeOptions": {
+                        "deckName": "Default",
+                        "checkChildren": false
+                    }
                 },
                 "tags": [
                     "yomichan"
diff --git a/plugin/__init__.py b/plugin/__init__.py
index bb50c41..855da46 100644
--- a/plugin/__init__.py
+++ b/plugin/__init__.py
@@ -207,6 +207,8 @@ class AnkiConnect:
 
         allowDuplicate = False
         duplicateScope = None
+        duplicateScopeDeckName = None
+        duplicateScopeCheckChildren = False
         if 'options' in note:
           if 'allowDuplicate' in note['options']:
             allowDuplicate = note['options']['allowDuplicate']
@@ -214,8 +216,16 @@ class AnkiConnect:
               raise Exception('option parameter \'allowDuplicate\' must be boolean')
           if 'duplicateScope' in note['options']:
             duplicateScope = note['options']['duplicateScope']
+          if 'duplicateScopeOptions' in note['options']:
+            duplicateScopeOptions = note['options']['duplicateScopeOptions']
+            if 'deckName' in duplicateScopeOptions:
+              duplicateScopeDeckName = duplicateScopeOptions['deckName']
+            if 'checkChildren' in duplicateScopeOptions:
+              duplicateScopeCheckChildren = duplicateScopeOptions['checkChildren']
+              if type(duplicateScopeCheckChildren) is not bool:
+                raise Exception('option parameter \'duplicateScopeOptions.checkChildren\' must be boolean')
 
-        duplicateOrEmpty = self.isNoteDuplicateOrEmptyInScope(ankiNote, deck, duplicateScope)
+        duplicateOrEmpty = self.isNoteDuplicateOrEmptyInScope(ankiNote, deck, collection, duplicateScope, duplicateScopeDeckName, duplicateScopeCheckChildren)
         if duplicateOrEmpty == 1:
             raise Exception('cannot create note because it is empty')
         elif duplicateOrEmpty == 2:
@@ -228,7 +238,7 @@ class AnkiConnect:
         else:
             raise Exception('cannot create note for unknown reason')
 
-    def isNoteDuplicateOrEmptyInScope(self, note, deck, duplicateScope):
+    def isNoteDuplicateOrEmptyInScope(self, note, deck, collection, duplicateScope, duplicateScopeDeckName, duplicateScopeCheckChildren):
         "1 if first is empty; 2 if first is a duplicate, False otherwise."
         result = note.dupeOrEmpty()
         if result != 2 or duplicateScope != 'deck':
@@ -240,18 +250,32 @@ class AnkiConnect:
         did = deck['id']
         csum = anki.utils.fieldChecksum(val)
 
+        if duplicateScopeDeckName is not None:
+            deck2 = collection.decks.byName(duplicateScopeDeckName)
+            if deck2 is None:
+                # Invalid deck, so cannot be duplicate
+                return False
+            did = deck2['id']
+
+        dids = {}
+        if duplicateScopeCheckChildren:
+            for kv in collection.decks.children(did):
+                dids[kv[1]] = True
+        else:
+            dids[did] = True
+
         for noteId in note.col.db.list(
             "select id from notes where csum = ? and id != ? and mid = ?",
             csum,
             note.id or 0,
             note.mid,
         ):
-            if note.col.db.scalar(
-                "select id from cards where nid = ? and did = ?",
-                noteId,
-                did
+            for cardDeckId in note.col.db.list(
+                "select did from cards where nid = ?",
+                noteId
             ):
-                return 2
+                if cardDeckId in dids:
+                    return 2
         return False