A high school house party gets out of hand in this rebroadcast. Overcrowding leads to a collapsed porch and a girl ends up dead. The CSI team uses social media to uncover how she really died. CBS, 8 p.m.
How to Be a Gentleman
When Andrew is left picking up Jerry's slack at work, he realizes his life is falling apart. He decides to recruit Bert to be his new life coach but soon realizes that may have been a bad idea. Global, 9:30 p.m.
Randy to the Rescue
Randy enlists the help of makeover experts as he transforms two very different women. He strives to help Erika deal with her body image issues; later, he tries to help tomboy Molly through a fashion intervention. TLC, 9 p.m.
Jay Leno: pre-empted
David Letterman: Will Ferrell, Rufus Wainwright
George Stroumboulopoulos: Russell Peters
Craig Ferguson: Steve Carell, Don Winslow
Jimmy Fallon: pre-empted
Jimmy Kimmel: Lisa Kudrow, Rosemarie DeWitt