Clint Eastwood directs and stars in this international intrigue action thriller that takes place on the Swiss Alps. Hemlock (Eastwood), a retired professional assassin who has turned toward the calmer pursuit of art collecting, is suddenly forced out of retirement to hunt a deadly double agent that murdered a close friend. The hunt takes Eastwood on a breathtaking journey up the Swiss Alps with a team of mountain climbers: one of whom is the man he seeks, through his identity is as yet unknown...