Finding Your Roots (8 p.m., UNC-TV) – Dr. Henry Louis Gates helps Ted Danson, Mary Steenburgen and William H. Macy trace their ancestors back to the Puritans.
Lethal Weapon (8 p.m., Fox) – Murtaugh and Riggs respond to a robbery that took place 20,000 feet in the air.
The Flash (8 p.m., The CW) – Barry takes on a dangerous meta who can control technology.
Bull (9 p.m., CBS) – Bull hires an eccentric attorney to represent him when a celebrity sues him after his advice regarding her custody case backfires.
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The Mayor (9:30 p.m., ABC) – When Courtney faces a dismal approval rating, he comes up with plan to turn public opinion in his favor.