"Last Tango in Halifax" (8 p.m., PBS): The British comedy-drama about second chances returns with fresh episodes. They begin with Celia and Alan (Anne Reid and Derek Jacobi) trying to plan a secret wedding as soon as possible.
BET Awards 2014 (8 p.m., BET): Chris Rock hosts the 14th annual trophy fest. Scheduled performers include Pharrell Williams, Nicki Minaj, Lil Wayne, John Legend, Trey Songz, Jhene Aiko and August Alsina. Lionel Richie is set to be honored with a Lifetime Achievement Award.
"Reckless" (9 p.m., CBS): The steamy new legal drama features two opposing attorneys (Anna Wood and Cam Gigandet) trying to keep the fact that they have the hots for each other a secret as they square off in a sex-scandal case involving members of the Charleston, South Carolina, police department.
"The Leftovers" (10 p.m., HBO): Call it the creepiest disappearing act ever. Two percent of the world's population suddenly vanishes in a Rapture-like event. Now, those left behind struggle to make sense of what happened.
Also on Sunday: