They don’t come back the same. Watch the second trailer for Pet Sematary, based on Stephen King’s terrifying novel. In theatres April 5, 2019. Based on the seminal horror novel by Stephen King, Pet Sematary follows Dr. Louis Creed (Jason Clarke), who, after relocating with his wife Rachel (Amy Seimetz) and their two young children from Boston to rural Maine, discovers a mysterious burial ground hidden deep in the woods near the family’s new home. When tragedy strikes, Louis turns to his unusual neighbor, Jud Crandall (John Lithgow), setting off a perilous chain reaction that unleashes an unfathomable evil with horrific consequences.