PEGGY DISCOVERS HER GREATEST ENEMY MAY BE CLOSER THAN SHE THINKS, ON "MARVEL'S AGENT CARTER" ON ABC

"A Sin to Err" - Peggy discovers the shocking truth about Leviathan but doesn't realize that her true enemies are even closer than she imagined. Meanwhile, Souza is close to confirming the truth about Peggy and may just put her in the crosshairs of the SSR, on "Marvel's Agent Carter," TUESDAY, FEBRUARY 10 (9:00-10:00 p.m., ET) on the ABC Television Network.

"Marvel's Agent Carter" stars Hayley Atwell as Agent Peggy Carter, James D'Arcy as Edwin Jarvis, Chad Michael Murray as Agent Jack Thompson, Enver Gjokaj as Agent Daniel Sousa and Shea Whigham as Chief Roger Dooley.

"Marvel's Agent Carter" stars Hayley Atwell as Agent Peggy Carter, James D'Arcy as Edwin Jarvis, Chad Michael Murray as Agent Jack Thompson, Enver Gjokaj as Agent Daniel Sousa and Shea Whigham as Chief Roger Dooley.

Guest starring are Lyndsy Fonseca as Angie Marinelli, Alexander Carroll as Agent Yauch, Ralph Brown as Dr. Ivchenko, Meagan Fay as Miriam Fry, Bridget Regan as Dottie Underwood, Devin Ratray as Sheldon McFee, Steven Hack as Albert, Rick Peters as Dr. Honicky, Dimiter D. Marinov as Fyodor, Dave Matos as Pasha, Victoria Profeta as Josephine, Yasmine Aker as Thelma, Krista Marie Yu as Edith, Kellen Michael as Small Boy, Joyce Greenleaf as Esther, Mike Massa as SSR Agent #1, Marcus Young as SSR Agent #2, and Denney Pierce as SSR Agent #3, .

"A Sin to Err" was written by Lindsey Allen and directed by Stephen Williams.

"Marvel's Agent Carter" is broadcast in 720 Progressive (720P), ABC's selected HDTV format with a 5.1 channel surround sound. This program carries a TV-PG,V parental guideline.

For more information on "Marvel's Agent Carter," visit ABC.com