AKA The Man in the Metal Mask - odd but really interesting Cold War/Sci-Fi hybrid.
Leading American scientist is involved in a car crash in Germany - he is recovered by the Soviets but he is so badly injured they have to be-build him as part human and part metal bionic man.
Time passes and the Soviets return him to the American's but is he who he says he is - or he a Soviet plant - or even if he is who he claims to be how do the American's know he hasn't been turned as part of the process.
Eliot Gould is the FBI man tasked with finding out - at first he is sure its a plant and if allowed back to the top secret project will betray everything to the Soviets and even if he is the real deal he may still do the same.
To complicate matters we see in flashback his interogation by a Soviet Colonel (Howard) so that we know more about what went on than Gould does- so its a real cat and mouse job.
Along the way the film muses on what makes us human and what defines a personality - is it merely the combination of memories or is it more?
Good performances and a remarkable job by Joseph Bova who manages to covey all the inner pain and confusion while in a metal mask.
It has a very clever reveal towards the end that is not where you thought the film was going and its a really interesting take on the genre - 4/5