Impressive procedural skin crawler.
It's a very impressive film from start to finish, the cast are excellent, George Kennedy & Henry Fonda portray the men pursuing the culprit with much believability, with enough moments of frustration and revulsion brought to life with style.
Of course this is Tony Curtis's show all the way, though, he is all bulked up and nothing like the handsome icon that people had grown accustomed to. He is convincingly menacing and handles the dual personality confusion scenes adroitly. One of the films' chief plus points is that the first hour only shows us the af... read the rest.