Sacha Baron Cohen took on OJ Simpson in the season finale of his Showtime series "Who Is America?"

Cohen's Italian photographer character tried to get Simpson to confess to murder by repeatedly joking about killing his girlfriend.

Sacha Baron Cohen tried in vain to get OJ Simpson to confess to murder in the season finale of his Showtime series "Who Is America?" on Sunday.

Disguised in the segment as an Italian photographer named Gio Monaldo, Cohen sits down with Simpson in Las Vegas and introduces his girlfriend to Simpson. In an attempt to get her to recognize Simpson, Cohen says Simpson was a Buffalo Bill and an actor in the "Naked Gun" films. The girlfriend doesn't recognize Simpson — who was found not guilty in the deaths of his ex-wife Nicole Brown Simpson and her friend Ron Goldman in 1995 — until Cohen makes repeated stabbing motions with his hand.

"She knows that, oh Jesus," Simpson replies, shaking his head and laughing.

After the girlfriend leaves the room and Simpson calls her "gorgeous," Cohen makes a series of jokes about killing her in an attempt to get Simpson to agree with him.

"She's gorgeous, but sometimes I want to kill her," Cohen says. "I want to send her on a private helicopter and throw her over the Grand Canyon — oopsie daisy!"

Cohen high-fives Simpson, but Simpson laughs and repeatedly says "stop."

In another hypothetical murder scenario, Simpson goes along with Cohen's character by saying the girlfriend might go bungee jumping with a cord that's too long.

The segment concludes with Cohen asking Simpson how he "got away with" his wife's killing.

"Me and you, we got something in common," Cohen says. "We both, how you say, 'ladykillers.'"

"No, I didn't kill nobody," Simpson says, laughing.

"Ah, I didn't either," Cohen replies.

Watch the episode on Showtime.