Annotation: Medusa's Scream is a thrill-ride that hurtles a train through an out-of-service gold mine in the Fraser Valley. Chase can't believe his luck when he lands a summer job in the food truck outside the ride's entrance. But then he notices strange things happening at the old mine. Chase starts to piece things together, and soon his life is threatened by a villain even scarier than the snake-headed Medusa of myth.