A quick moving film about what happens when we aren't careful with potentially deadly, unknown substances. Here, an arrogant scientist is acting on his own and unleashes a kind of plant/creature that devours everything in its path. After an encounter with his ex he is eaten by the thing. Forces move in and burn the creature but it has contaminated other objects and may be carried by the ex-wife. Much of the movie involves hunting down this woman who thinks she is suspected of murder. I have to admit that the interrogation of different women on a plane aren't done very well. Perhaps the first thing you do is lay it on the line. There is good suspense at the end and it leaves one with a little something in the pit of the stomach. Good 1950's stuff.