The Walking Dead AMC's zombie ratings powerhouse wraps up its fifth season Sunday, as Rick and crew don't feel all too welcomed in the Alexandria safe zone, while Darryl runs into trouble out in the wild. It's a Walking Dead finale, so expect a death of a near and dear one. 9 p.m. Sunday on AMC.
Going Clear: Scientology and the Prison of Belief. Academy Award-winner Alex Gibney uses Lawrence Wright's fantastic book as source material for this searing look at the Church of Scientology, from how the life of founder L. Ron Hubbard affected the religion to how it keeps its members from fleeing through blackmail and threats of destruction. 8 p.m. Sunday on HBO.
Cancer: The Emperor of All Maladies. The three-part, Ken Burns-produced documentary, based on the Pulitzer Prize-winning book by Siddhartha Mukherjee, looks at those on the front lines of fighting cancer, including the Children's Hospital of Philadelphia. Starts 9 p.m. Monday on WHYY.
Archer. If you haven't been watching Adam Reed's spy spoof 'toon, you are missing out on one of TV's most consistently hilarious, surprisingly smart comedies. The sixth season wraps Thursday, but the first five are available on Netflix. 10 p.m. Thursday on FX.