Please visit https://thebookvoice.com/podcasts/1/audiobook/633342 to listen full audiobooks. Title: The Hidden Tunnel Series: #4 of The Mystery House Author: Eva Pohler Narrator: Debbie Andreen Format: Unabridged Audiobook Length: 6 hours 33 minutes Release date: October 10, 2022 Genres: Horror Publisher's Summary: It's hard to say no to a handsome billionaire... 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.