Body of Proof
Megan returns to work to find a man from her past has been assigned to her latest case in this season première. Mark Valley joins the cast as Det. Tommy Sullivan, who works with Megan to find a serial killer who targets young war veterans. ABC/Citytv, 9 p.m.
Appalled that he has to read a live commercial for a male-enhancement product, Ryan stages a walkout. However, he learns a difficult lesson when he's quickly replaced by Terrell Owens. Elsewhere, Lauren wants to find out who gave her a poor rating. NBC, 8 p.m.
The new documentary Raising Adam Lanza examines the complicated relationship between Lanza, the gunman responsible for the massacre at Sandy Hook Elementary School in Newtown, Conn., and his mother, Nancy. PBS, 9 p.m.
George Stroumboulopoulos: William H. Macy
Jay Leno: Robin Wright, Bonnie Raitt
David Letterman: Michelle Williams, Chris O'Donnell
Jimmy Kimmel: Anthony Edwards, Mike Piazza
Craig Ferguson: Jon Cryer, Melissa Benoist
Jimmy Fallon: David Spade, Atlas Genius
Conan O'Brien: Andy Samberg, Lisa Loeb