"Clint Eastwood directs and stars in this international intrigue action thriller that takes place on the Swiss Alps. Hemlock,m a retired professional assassin (Eastwood) who has turned toward a calmer pursuit of art collection, is suddely forced out of retirement to hunt a deadly double agent who 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, though his identity is as yet unknown. This top-notch action film, based on the novel by Trevanian, features some of the most exciting mountain climbing sequences ever filmed" (from back of DVD)
A narrative of excusions and ascents, an account of the origin and phenomena of glaciers, and an expostition of the physical principles to which they are related. -- From interior title page