The Middle The family heads to Frankie’s (Patricia Heaton) sister’s home for Thanksgiving. Charlie McDermott, Eden Sher, Atticus Shaffer and Neil Flynn also stars. 8 p.m. ABC
Lethal Weapon Riggs (Clayne Crawford) has a reunion with friends from his youth, but learns they might be linked to the robbery and homicide case that he and Murtaugh (Damon Wayans Sr.) are investigating. 8 p.m. Fox
Finding Your Roots Oscar-winning actress Lupita Nyong’o (“12 Years a Slave”), NBA basketball star Carmelo Anthony and Republican strategist Ana Navarro learn about their ancestors during the Revolutionary War. 8 p.m. KOCE and...