A celebrated cop attempts to hunt down a serial killer who has specifically challenged him to put an end to the killing spree.
A neurologist visits an incarcerated serial killer living in exile to study his brain and discovers the horror that lurks behind his violent impulses.
An agoraphobic young man (Henry), living with a Youtuber and struggling actor (Eric), hacks the webcams of young women, and suspects that one of them is a serial killer.