Children had an unexpected shock when a cinema played a horror movie instead of Madagascar 3.
Excited youngsters and their parents were looking forward to seeing animated film, Madagascar 3: Europe's Most Wanted.
But their joy turned into utter horror when the projectionist accidentally played Paranormal Activity 4.
The film opened with a flashback to the first Paranormal Activity - featuring a woman's bloodied corpse being hurled at the big screen.
Around 25 families scrambled for the exit of the Cineworld theatre in Nottingham, reports The Mirror.
Natasha Lewis, 32, from Bulwell, Notts, took her eight-year-old son Dylan Lewis-Gray to the 10am screening.
She said: "I'm disgusted about it. It was only about two minutes worth of the film but it was enough to scar the children for life.
"It's a terrifying scene where a body shoots towards the camera. It's enough to make grown men jump - imagine the terror for these kids.
"All you could hear were children crying and screaming. Everyone was upset. Dylan doesn't want to set foot in the cinema again."
A Cineworld spokeswoman added: "There was technical error with the projector. We apologise sincerely."