Gutterballs

Tensions between two rival cliques boil over during an after-hours bowling session and a fight breaks out. When a girl from one of the team forgets her purse in the arcade, she returns only to be brutally raped by members of the other team. The following night, both groups return to the bowling alley. Except this time, they're being stalked by a deranged serial killer adorned with a bowling bag as a mask and by sunrise, the alleys will run red with blood.