WTRF-DT2

Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help; Koothrappali attempts to mend things with his ex-fiancee Anu.

Koothrappali and Leonard take Wolowitz to Las Vegas; Sheldon is forced to bunk with Penny when he gets locked out of his apartment.

Jerry's new membership in the Friars Club is jeopardized when a jacket he borrowed from the club gets lost.

Kramer gets into meat slicing; Jerry dates a doctor (Marcia Cross) who isn't impressed with his job; George's new boss is a former adversary.

After mom Regina Hicks is found dead in her car submerged in a pond, the case goes unsolved for nearly 25 years; in a Dateline exclusive, the man who helped police capture the killer speaks out and reveals what happened that night.

When Dee Warner vanishes from her farm, her family is alarmed as her car is still in the driveway and her wedding ring is left behind; after three years of countless leads and no answers, a single X-ray image reveals the truth.

Stay informed with the latest breaking news and headlines.

Paid programming.

After Crosby's old army buddy is attacked in an apparent drug deal gone wrong, the team's quest for answers uncovers a dangerous web of conspiracy; Jess questions his relationship with Sarah after an unexpected encounter.

Violet clashes with her new partner; Severide discovers a hidden stash of money on a call and squares off against the cops working the case; Mouch gets a parking ticket.