This movie is based on a story by H.P. Lovecraft called "The Colour Out of Space". A meteor that crashes and mutates plants and animals is a great premise. There are a couple of intriguing shots and sets, one is what appears to be mutated animals in a greenhouse, and the other is the holding "pit" of the meteorite in the basement of Nahum (played by Boris Karloff). It's too bad that the movie is slow beyond words and takes place mostly in a mansion where people do nothing but plead with each other not to do this or that.

All of the acting here falls flat, including Karloff. The characters, especially Stephen played by Nick Adams, are uninteresting. The most disappointing thing is there is something otherworldly happening in that greenhouse and we get only a few seconds to explore it.