The BAU team works toward solving a string of brutal murders in the new episode Sakizuki. Narrowing the likely origins of the discarded bodies, they get closer to discovering who the killer is. Cynthia Nixon and Gillian Anderson guest star. NBC/Citytv, 9 p.m.
Kirstie Alley returns to prime time in this sitcom, produced for U.S. cable's TV Land network. She portrays a Broadway diva whose life turns upside down when the son she gave up for adoption at birth suddenly reappears in her life. Rhea Perlman and Michael Richards co-star. CTV, 7:30 p.m.
In the new episode Insult to Injury, Danny receives a phone call from a woman threatening to kill herself and the man who murdered her parents. Meanwhile, Frank accompanies Sean on a school field trip. CBS/CTV, 9 p.m.
George Stroumboulopoulos: Randy Bachman
David Letterman: Lenny Marcus, Joan Jett & the Blackhearts
Jimmy Fallon: Stephen Colbert, Broken Bells
Craig Ferguson: Aaron Paul
Seth Meyers: Kenan Thompson, Johnny Weir