Weekend TV watch

Nicki Minaj opens the 2017 Billboard Music Awards (Sunday at 8 p.m. on ABC). With a little help from Jason Derulo, David Guetta and Lil Wayne, she promises to rock the house with a nine-minute performance. Also scheduled to perform: Drake, Florida Georgia Line, Celine Dion and some unknown named Cher.

Could you kill your own child if you knew it was going to be responsible for the deaths of 7 billion people? You won’t have to wait long for an answer on Syfy’s “12

Monkeys” (season premiere tonight at 8). The cable network is airing all 10 episodes of the new season this weekend — four tonight, three tomorrow and the final three Sunday.

The Rock — who recently revealed his own aspirations for the White House — hosts the season finale of “Saturday Night Live” (tomorrow at 11:30 p.m. on NBC). What do you think the chances are we’ll see the return of The Rock Obama? After nine seasons, it’s also Bobby Moynihan’s final episode. He’ll be starring in the new CBS fall comedy “Me, Myself and I.” On a pivotal episode of

“American Gods” (Sunday at 9 p.m. on Starz), Laura’s life, death and haunting afterlife. Shadow will never be the same. “D-Day: Over Normandy” (Sunday at 6 p.m. on WGBH) re-creates the Allied forces’ liberation of Western Europe in 1944, but Patriots Nation might be most surprised by the documentary narrator — it’s head coach Bill Belichick. According to the station, he’s a student of military history whose father served in the Navy during World War II.