Robert Ludlums - The Osterman Weekend (1983)

An outspoken television personality, John Tanner (Rutger Hauer) has an annual tradition of going away with three college buddies. However, when Tanner is informed that these friends -- Bernard Osterman (Craig T. Nelson), Richard Tremayne (Dennis Hopper) and Joseph Cardone (Chris Sarandon) -- are part of a Soviet spy network, it adds considerable conflict to their getaway, a tension heightened by an enigmatic spy named Lawrence Fassett (John Hurt), who has unclear motives.