The Coded Blue Envelope by Anna Elliott, Charles Veley

https://thebookvoice.com/podcasts/2/audible/157247 to listen full audiobooks. Title: The Coded Blue Envelope Series: A Sherlock Holmes and Lucy James Mystery, Book 22 Author: Anna Elliott, Charles Veley Narrator: Simon Prebble, Mary Jane Wells Format: mp3 Length: 2 hrs and 50 mins Release date: 01-19-21 Ratings: 4.5 out of 5 stars, 34 ratings Genres: Action & Adventure Publisher's Summary: Milan, 1899. A desperate musical colleague smuggles an envelope to Zoe, Lucy's mother, begging her to deliver it to Sherlock Holmes. When her colleague is killed, Zoe must act quickly to avoid the same fate. She flees to London, only to find she’s been followed by Black Hand thugs determined to retrieve the envelope’s contents - a code which Holmes must decipher.