AT QUANTICO, THE TRAINEES STUDY FORMER SERIAL KILLER CASES AS AN EXERCISE IN ANALYZING EVIDENCE, AND IN THE FUTURE, ALEX IS INTERROGATED WHILE RYAN'S LIFE HANGS IN THE BALANCE, ON ABC'S "QUANTICO"

Anne Heche Guest Stars as Dr. Susan Langdon

"Guilty" - At Quantico, the NATS attend a class with guest speaker Dr. Susan Langdon, played by Anne Heche. Dr. Langdon is a former agent and profiler who tasks the trainees with looking at serial killer cases to find the one victim that doesn't fit the case, but when Simon becomes too good at finding things that don't belong, it's his life that becomes endangered. In the future, Alex is interrogated by a highly sophisticated FBI team while Ryan's life hangs in the balance, on "Quantico," SUNDAY, JANUARY 31 (9:00-10:00 p.m. EST) on the ABC Television Network. (Rebroadcast. OAD: 11/29/15)

"Quantico" stars Priyanka Chopra as Alex Parrish, Josh Hopkins as Liam O'Connor, Aunjanue Ellis as Miranda Shaw, Jake McLaughlin as Ryan Booth, Tate Ellington as Simon Asher, Johanna Braddy as Shelby Wyatt, Graham Rogers as Caleb Haas, Yasmine Al Massri as Nimah Amin and Anabelle Acosta as Natalie Vasquez.

Guest starring Rick Cosnett as Elias, Mark Pellegrino as Clayton, Jacob Artist as Brandon, Yair Ben-Dor as Oren, Ariane Rinehart as Louisa, Anne Heche as Dr. Susan Langdon and Griffin Wells as Oded Fehr.

"Guilty" was written by Cameron Litvack and directed by Stephen Kay.

Executive producers of "Quantico" are Joshua Safran, Mark Gordon, Nicholas Pepper, Jake Coburn and Robert Sertner. "Quantico" is produced by ABC Studios.