Mark Lewis (Karl Boehm) is a psycho. He kills women by using a spiked tripod which is connected under his camera so that he can capture their last screams of terror on film. When Mark was a kid, his dad (Michael Powell), used him in several experiments in fear that left him scarred for life, as the events were so traumatic and disturbing. Mark then grew up being abnormally interested in fear and more so with people’s expressions when they are terrified. Mark is a voyeur who also stutters and wants to be by himself when he’s not working with his camera. He loses more of his sanity as he kills more people.