A review by djwudi
Who? by Algis Budrys

5.0

After a laboratory explosion, a scientist is rescued and rebuilt by the enemy. When returned, his skull has been replaced by a featureless metal dome. Now his experiment is on hold as his superiors must try to determine if he's the man he claims to be or an impostor sent back as a spy. Ends up being a surprisingly engrossing look at identity, and how easy -- or difficult -- it can be to know who someone really is.