In two sittings as it failed to grip. Suggested by Dana Stevens's review of the Criterion release in 2013. I didn't find the depths she did: thematically it's body horror turned into identity horror where things go as they must, entirely riven with buyer's remorse. Raw material for David Lynch perhaps. Directed by John Frankenheimer. Rock Hudson in the lead. Wesley Addy, playing a factotum, was somehow familiar.
A. H. Weiler at the time. Roger Ebert appears to have given it a miss.