Filmmaker Johannes Roberts has built a reputation as a master of mayhem in films where killer sharks, zombies, demons, and slashers threaten the innocent and the guilty alike. His latest movie, Primate, promises to be the most shocking, bone-chilling tale he has told thus far, as a group of teens are terrorized when their pet chimp suddenly turns on them. Amping up the visceral terror with old-school, in-camera special effects and jaw-dropping surprises, Roberts is taking horror to new and ever-bloodier heights.