Typical - you marry the man of your dreams and he turns out to be some kind of rubber alien.

Obvious parallels with The Invasion of the Body Snatchers aside, this looks like standard 50's B-Movie fare.  It serves up the standard menu of paranoia, dodgy special effects and men dressed up in funny Martian suits.  However, unlike other 50's B-movies this one is apparently quite good.

Several sources say that this movie was banned in Finland.  I wonder why?  It seems to be fairly harmless.  I can only assume that Finnish Government were all secretly aliens at the time, and were worried that releasing the film would teach the population how to see through their disguises.

I Married a Monster from Outer Space was remade for television in 1998 as I Married a Monster, splendidly featuring the lead actors from the original as an old couple.

Favourite bit:  The lightning-flash-evil-face-reveal, or LFEFR for short.