Got so bored stopped watching
I thought this was going to be a horror story but it’s actually about a dysfunctional family. There’s an abusive dad, an alienated mother, an arrogant brother, and a sister who is victimized. It’s also very slow and badly written. For instance in one scene there’s sinister background music and yet nothing happens. When something does it’s not even interesting. I don’t know why this was made into a film it could have very well been a made for TV movie. I got so bored I couldn’t watch it anymore.
The movie title "Crucible Of Horror," available on Prime Video, has received an average rating of 3.9 from 61 reviewers. 
It features elements such as IMDb 5.2, 1 h 30 min, 1971 and R, and it is priced at $None.

This title falls under the categories of Suspense, Horror, Downbeat and Fantastic. 
The additional details include the following in key-value format :
 {"Subtitles": ["None available"], "Directors": ["Ritelis", "Viktors"], "Producers": ["Gabrielle Beaumont", "Christopher C. Dewey", "Dennis Friedland"], "Starring": ["Michael Gough", "Yvonne Mitchell"]}

Here is a brief synopsis of the title : The wife and daughter of an abusive, sadistic man hatch a scheme to murder him and then make it look like a suicide. However, once they put the plan is motion, they discover he is much harder to kill than they first thought..