Part 6: As work progresses through the 1990s and the tunnels take shape, the true cost of the Big Dig remains unknown to the public, until a series of revelations pulls down the curtain and shakes confidence in the whole project.

Credits:

Host and scriptwriter: Ian Coss

Executive Producer: Devin Maverick Robins

Producers: Isabel Hibbard and Ian Coss

Editor: Lacy Roberts

Editorial Advisor: Stephanie Leydon

Fact Checker: Lisa Wardle

Scoring and Music Supervision: Ian Coss

Project Manager: Meiqian He