PA: Viewer discretion is advised.

THE REMAINS OF A YOUNG DOCUMENTARY FILMMAKER LEAD BRENNAN AND BOOTH TO INVESTIGATE A CIVILIZATION OF SHELTERS AND THE LABYRINTH OF TUNNELS UNDER WASHINGTON, DC, TO FIND A KILLER ON �BONES� WEDNESDAY, DECEMBER 27, ON FOX

When the remains of a young documentary filmmaker are found in a ventilation shaft in an underground Washington, DC, tunnel, Brennan and Booth must venture into the maze of tunnels beneath the city and are surprised to discover a world of homeless shelters underground. Clues lead them to suspect that a man living underground was involved with the murder, but instead he gives them valuable information about the purpose of the victim�s underground project. When a valuable artifact is found among the victim�s possessions, the entire Jeffersonian team joins in the investigation to learn why the victim was in the maze of tunnels and what she found down there that led to her murder in �The Woman in the Tunnel� episode of BONES airing Wednesday, Dec. 27 (9:00-10:00 PM ET/PT) on FOX. (BON-112) (TV-14 D, L, V)

Cast: Emily Deschanel as Dr. Temperance Brennan, David Boreanaz as FBI Special Agent Seeley Booth, TJ Thyne as Dr. Jack Hodgins, Michaela Conlin as Angela Montenegro, Eric Millegan as Zack Addy, Jonathan Adams as Dr. Daniel Goodman.

Guest Cast: Glenn Plummer as Harold, David Denman as Phil Garfield, Fay Wolf as Marni Hunter, Mary Mara as Helen Bronson, Ryan Alosio as Duke Daillel, Brian Gross as Kyle Montrose, Keith Pillow as Michael Preston, Matt Huhn as Cop.