diff --git a/video_metadata/views/tmdb.py b/video_metadata/views/tmdb.py
index 8fbafde..ab008ff 100644
--- a/video_metadata/views/tmdb.py
+++ b/video_metadata/views/tmdb.py
@@ -404,7 +404,9 @@ def storeTMDBQueryResults(query_obj, result_list):
     cur = conn.cursor()
     query_id = 0
 
-    current_app.logger.debug('adding query string "{}" into local cache'.format(query_obj.parsed_query_str))
+    current_app.logger.debug(f'{util.getFunctionName()}, adding query string '
+        f'"{query_obj.parsed_query_str}" into local cache')
+    #current_app.logger.debug(f'{util.getFunctionName()}, result_list:\n{result_list} ')
 
     try:
         cur.execute('BEGIN TRANSACTION')
@@ -416,7 +418,18 @@ def storeTMDBQueryResults(query_obj, result_list):
         query_obj.errors.append(e)
 
     for result in result_list:
+        # NOTE: check stored details before trying to add to local db to avoid unique key
+        #   constraint error
+        cur.execute('SELECT COUNT(*) FROM movie_details WHERE movie_id=?', (result.id,))
+        count = cur.fetchone()[0]
+        if count > 0:
+            current_app.logger.debug(f'{util.getFunctionName()}, '
+                f'skipping result that is already saved. id: {result.id}, title: {result.title}'
+            )
+            break
+
         try:
+            current_app.logger.debug(f'{util.getFunctionName()}, adding movie details for "{result.title}"')
             cur.execute("INSERT INTO movie_details("
                 + "movie_id, title, overview, release_date, original_language, poster_path)"
                 + " VALUES (?,?,?,?,?,?)",
@@ -428,7 +441,7 @@ def storeTMDBQueryResults(query_obj, result_list):
                 + " VALUES (?,?)", (query_id, result.id)
             )
         except DatabaseError as e:
-            query_obj.errors.append(e)
+            query_obj.errors.append(f'{util.getFunctionName()}, database error \'{e}\'')
 
     if len(query_obj.errors) == 0:
         conn.commit()