NBC will broadcast two original episodes of "Chuck" (8-9 p.m. ET Mondays) on Thursday, January 24, 8-9 p.m. ET/PT and again at 10-11 p.m. ET/PT -- sandwiched around an original episode of "The Celebrity Apprentice" from 9-10 p.m. ET/PT.

"Chuck Versus the Undercover Lover" (8:00 pm ET/PT)

Chuck (Zachary Levi) discovers that several Russian arms dealers are secretly meeting in Los Angeles. One particular Russian woman catches his attention, and he flashes on her as being Casey's ex-girlfriend. Chuck grows intrigued and begins to pester Casey about his history with the woman. After learning she is to set marry one of the Russian arms dealers, Chuck insists that Casey fight for his woman. Will Casey go after his true love without compromising his identity? Meanwhile, Captain Awesome (recurring guest star Ryan McPartlin) and Ellie (Sarah Lancaster) reach a tough point in their relationship.

"Chuck Versus the Marlin" (10:00 pm ET/PT)

Captain Awesome asks Chuck if he can have Ellie's hand in marriage, and then insists that Chuck hold on to the ring until the proposal is planned. Chuck locks the ring in his Buy More locker, but returns the next day to discover everything has been stolen from the store. Meanwhile, Casey and Sarah discover that the CIA has been spying on them in hopes of discovering "the intersect." With Chuck's identity and life on the line, the National Security Agency has no other option than to relocate Chuck into a permanent holding cell. Will Chuck lose his family and friends forever?