Todd and Terry are identical twins twins. One night at a drive-in theater in 1974, young Terry sees his mother Maddy and her date begin kissing inside the car. Upset that his mother is "back at it again", he wakes his brother and they sneak out of the car. Apparently triggered by his mother's promiscuity, Terry takes a hatchet and murders a teenager having sex with his girlfriend in the backseat of their car, and frames Todd by smearing blood onto him and placing the hatchet into his hand. Todd, too traumatized to speak in his own defense, is found guilty and committed to an Psychiatric hospital.