A recent series of images by Nightmares Fear Factory in Niagara Falls depict people at a particularly terrifying moment during a walk through a haunted house.
These images are remarkably photographic in that they show people as they are, in playful moments of shock at some unseen -- and fake -- threat.
Their flash of a reaction reveals much about these people as individuals, and about human nature. Of special note is our shared and immediate tendency to seek the physical comfort of others when startled unexpectedly.
And they're just funny. Some favorites:
(All photos courtesy of nightmaresfearfactory.com)