A Halloween classic finds new life in this SteelBook edition. When Silver Shamrock masks become the must-have costume across America, Doctor Daniel Challis uncovers a sinister conspiracy behind the craze. Directed by Tommy Lee Wallace and starring Tom Atkins, Stacey Nelkin, and Dan O'Herlihy, this cult favorite delivers suspense and intrigue perfect for the season. High-definition presentation brings fresh clarity to this 1982 thriller.