What Would You Do?
John Quinones hosts this hidden-camera series that shows what everyday people are made of. A team of actors portrays difficult situations, such as theft or mistreatment, compelling unsuspecting bystanders to step in and take action. ABC 8 p.m.
Danny (Donnie Wahlberg) launches a full-on manhunt for the distributor of a deadly new brand of heroin. Meanwhile, Frank (Tom Selleck) is determined to get the drugs off the street as more and more OD victims land in the hospital. CBS/CTV, 9 p.m.
George Stroumboulopoulos: Idris Elba
David Letterman: Melissa McCarthy, Tim Duncan
Jimmy Fallon: Dan Aykroyd
Jimmy Kimmel: Gary Oldman, Nathan Fielder
Craig Ferguson: Aisha Tyler
Seth Meyers: Andy Cohen, the Kratt Brothers