Kill Giggles.

Tommy wasn't born a psychopath, but one horrifying thing has led him to pursue a lifelong killing spree. Tommy is triggered by those monsters in makeup… clowns. His hunt is not confined to a single jester and he won't stop until he has killed every clown on earth. When he falls for Eve, life takes a wonderful turn and life seems worth living again – until he discovers his new girlfriend's father is the most terrifying clown of all.