Demi Lovato Looks Like She's Seen A Ghost On 'Punk'd' [Sneak Peek]

Demi Lovato at the 2012 People's Choice Awards.

Singer and actress Demi Lovato has very publicly battled and defeated her demons, but when she has to go toe-to-toe with a ghost on this coming Thursday's "Punk'd," it looks as if the prank might get the best of the young star (in her defense, a piano-playing poltergeist is some scary sh**!).

Former "Wild 'N Out" jokester and Mr. Mariah Carey, Nick Cannon, takes on the role of guest host in the below sneak peek of the episode, and the guy is ready to scare the bejesus out of a pair of Disney exports. While Demi's busy battling an unwelcome specter in the recording studio, Ashley Tisdale's convinced her car's driver is dragging an unlucky pedestrian along for the ride. Were tempted to say this is a bad thing, but hey, public transportation is sparse in Hollywood--gotta get around any which way you can.

+ Check out the video, and tell us if you're more excited to see Demi or The Tis cry out in sheer terror.

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Photo: Amelie Mucci/Splash News