Tunnels filled with human bones lie beneath the streets of Paris, and this horrifying engineering marvel points to a dark secret; new discoveries reveal why this grisly underground death maze was built and why it was abandoned.
| Title | Labyrinth of the Dead |
|---|---|
| Genres | Documentary |
| Release Date | 2019-04-25 |
| Episode Runtime | 00 Hours 42 Minutes |
| Season Number | 4 |
| Episode Number | 4 |
| Production Companies | Travel Channel, Science Channel, Procter & Gamble Productions, Like A Shot Entertainment |
