According to legend, an ominous entity known as the Queen of Spades can be summoned by performing an ancient ritual.

According to legend, an ominous entity known as the Queen of Spades can be summoned by performing an ancient ritual. Those brave enough draw a door and a staircase on a mirror, in darkness, and say her name three times. What happens next must be experienced to be believed. Four teenagers decide to summon the Queen of Spades as a joke. But they could never imagine the horrors this innocent prank has condemned them and their loved ones too. The evil entity won't stop until she gets their souls.—Epic Pictures