When the Poughkeepsie, New York cops kicked in the door of the suspected "Water Street Butcher," they discovered thousands of hours of videotapes in which the serial killer chronicled the abductions and sufferings of his victims in exquisite detail. Documentarians sift through the footage to try and understand a deviant psyche... but will their own sanity be the price? Found-footage frightener, an uncovered early effort from director John Erick Dowdle ("As Above, So Below") stars Stacy Chbosky, Ben Messmer.