A New York theater troupe embarks on a soul searching trip into the woods to "find themselves," only to wander directly into the one place on Earth where lunar radiation is so strongly focused that it causes total insanity. Moon Lake may look serine, but don't be fooled by appearances, because these snowy woods have been a hotbed of evil activity for centuries. Now, as the confused thespians begin dying in droves, they begin to wonder which member of the troupe could be capable of such atrocities. Perhaps the groundskeeper and his deaf-mute sister may have the answers they're searching for. An outrageous play on typical horror movie tropes, Hysterical Psycho was an official entry into the 2009 Tribeca Film Festival.