THE TEAM MUST TRACK DOWN A YOUNG MAN WHO SURVIVED A MASS SHOOTING BEFORE HE CAN EXACT REVENGE ON THOSE HE BELIEVES FAILED HIM, ON "FBI: MOST WANTED," TUESDAY, JAN. 21

"Hairtrigger" - When a young man is traumatized by his experience surviving a mass shooting, and radicalized into becoming an anti-government terrorist, the team must act quickly to track him down before he can exact revenge on those he believes failed him, on FBI: MOST WANTED, Tuesday, Jan. 21 (10:00-11:00 PM, ET/PT) on the CBS Television Network.

REGULAR CAST:

Julian McMahon (Jess LeCroix)
Kellan Lutz (Kenny Crosby)
Roxy Sternberg (Sheryll Barnes)
Keisha Castle-Hughes (Hana Gibson)
Nathaniel Arcand (Clinton Skye)

RECURRING CAST:

Yaya Gosselin (Tali LeCroix)

GUEST CAST:

Charlie Tahan (Doug Timmins)
Jonathan Judge-Russo (Mike Kelerman)
Annie H�gg (Lena)
Casey Predovic (Earl Hansen)
Brian Cali (Peter Bateman)
Daren Donofrio (Officer Clement)
Anita Hollander (Joann)
Taylor Rose (Abby Givens)
Nathan Hinton (Kip Wilkerson)
Jenny Leona (Marie Hansen)
Jess Gabor (Molly Werner)
Adela Maria Bolet (Sean Hagerman)
William DePaolo (Security Chief)

STORY BY: Gina Giofnriddo and Jerome Hariston

TELEPLAY BY: Gina Gionfriddo

DIRECTED BY: Jim McKay