What to Watch on Sunday: A birthday party for Sinatra

Sinatra 100 (9 p.m., CBS) - A tribute celebrating what would have been Frank Sinatra’s 100th birthday includes performances from Tony Bennett, Harry Connick Jr., Lady Gaga, John Legend, Alicia Keys and others.

The Leftovers (9 p.m., HBO) - In the second season finale, Kevin comes clean to John about his connection to Evie’s disappearance.

Agent X (9 p.m., TNT) - John accompanies Natalie on clandestine peace talks between the Mexican government and Marxist insurgents. The group is stranded when their helicopter is shot down.

Last Man on Earth (9:30 p.m., Fox) - As Christmas draws near, Carol tries to spread festive cheer by organizing a Secret Santa gift exchange.

Quantico (10 p.m., ABC) - An emergency disciplinary hearing at Quantico results in deep secrets being revealed.

This story was originally published December 6, 2015 at 1:00 AM with the headline "What to Watch on Sunday: A birthday party for Sinatra."