Very little happens in this movie. Almost nothing, in fact. Basically, Joan Crawford acts cruel and insane for an hour and a half until her husband finds out how much she's been lying about everything. Then he goes to Japan and the movie's over. i wasn't all that into it, but there are worse things in the world than watching Joan Crawford play a domineering wife.
This movie was produced by William Dozier before he did the "Batman" television series. I think that's kind of interesting.