The Double Man (1967)

Following notification of the death of his son, in a skiing accident in the Austrian Alps, the cold and emotion-less widower Dan Slater, a high ranking member of the CIA, travels to Austria for the funeral. Dan is mysteriously provided evidence of foul play in his son's death and he decides to investigate. His friend, a former undercover operative, Frank Wheatly, who operates the International School where Dan left his son in care proves useless as Dan seeks out the murderers. Eventually, Dan finds a witness who was on the ski slope at the time of the accident, Gina, the companion of wealthy socialite Mrs. Carrington. Gina identifies two male strangers and Dan is led into an overly complex trap laid by Berthold, a Russian agent. The Russians plan to kidnap Slater, do away with him and substitute him with an exact double in order to obtain a mole in the highest echelons of the CIA. Will Berthold succeed or will Frank and Gina realize something is amiss and rescue Slater?