Haunted house poster prank scares Swedes

Gröna Lund amusement park in Stockholm dared pedestrians to scan the QR code on a blank poster for a look at its latest attraction. They expected the ghost to appear on their phones, not in real life! A horrible screeching sound summoned a ghost that reached through the poster.

The prankvertising was done to promote Dr. Morphio’s House of Nightmares, a haunted house attraction. Legend has it that it the doctor extracted his patients nightmares and infused them with the walls of the house.

Dr. Morphio’s House of Nightmares opens April 25, 2015.

Nightmare on Elm Street Nancy sleeping bed Freddy wall.

This simple effect has been scaring people since the original Nightmare on Elm Street (1984). Freddy Krueger emerges from the wall while Nancy sleeps in her bedroom. To create the effect, special effects designer Jim Doyle pushed his own face through stretchy spandex. Ghosts in the walls were also used in The Frighteners.