Celebrities go undercover for new Nickelodeon show

From the makers of “Undercover Boss,” the Nickelodeon reality series “The Substitute” (7 p.m.) follows a well-known celebrity as he or she goes undercover as a substitute teacher in a middle school.

Tonight’s installment features comedian Lilly Singh, a YouTube star and host of NBC’s forthcoming “A Little Late With Lilly Singh.” She’ll submit to hours of makeup and prosthetic fittings and costume changes to prank students as a teacher at Woodrow Wilson Middle School in Glendale, Calif.

This is the latest in a series of shows featuring bold-faced names passing as “normal” people. That used to be called “acting.”


n The Boston Bruins host the Carolina Hurricanes in NHL action (6:15 p.m., NBC).

n The gang at last meets Henry Chase on “God Friended Me” (7 p.m., CBS, rerun).

n Contestants perform three numbers on “American Idol” (7 p.m., ABC, rerun).

n Grieving her mother’s loss, a teen must contend with her “Psycho Granny” (7 p.m., Lifetime).

n Amy Adams stars in the 2016 science fiction drama “Arrival” (7:30 p.m., SyFy).

n Memory loss on “Ransom” (8 p.m., CBS).

n A bridesmaid to three friends in one summer, a woman retreats to a place of joy in the 2015 romance “Sailing Into Love” (8 p.m., Hallmark).

n Paul Rudd hosts the season finale of “Saturday Night Live” (10:30 p.m., NBC), featuring musical guest DJ Khaled.