Former Doctor Who star Karen Gillan shows off her American accent in a trailer for new horror movie Oculus.

The spooky film from director Mike Flanagan features Gillan as Kaylie Russell, a young woman who is trying to clear her brother who is wrongly accused of murdering their parents.

Kaylie believes that the murders were caused by a cursed mirror that can warp its victims' perceptions. And the mirror has not yet finished torturing her family.

Gillan will also star this summer in Marvel Studios' Guardians of the Galaxy as the villain Nebula, and will feature in new ABC comedy pilot Selfie.

Oculus is due to be released in June.