The Hidden Tunnel by Eva Pohler

https://thebookvoice.com/podcasts/2/audible/150412 to listen full audiobooks. Title: The Hidden Tunnel Series: The Mystery House Series, Book 4 Author: Eva Pohler Narrator: Debbie Andreen Format: mp3 Length: 6 hrs and 33 mins Release date: 11-04-22 Ratings: 5 out of 5 stars, 4 ratings Genres: Ghosts Publisher's Summary: Ellen, Sue, and Tanya travel to Portland, Oregon where a local billionaire has promised to give them his current renovation project—a historical carriage house in the downtown area—if they can find his missing brother. As they dig deeper into a local legend, they soon fear that the cause of the brother's disappearance is more sinister and more powerful than ghosts.