Ruth Earlton has come home to her ancestral mansion to claim her inheritance. Accompanied by her boyfriend, she discovers that her father died suddenly under suspicious circumstances. Now it's her turn, as her deranged and relentless uncle targets her for death with the help of his wife and son, plus a very unhappy ape.
This is quite a fun little costume-horror about a doctor who has a pet ape. When he dies, his daughter becomes the target of her greedy uncle who with the aid of his son, plots to deprive her of her inheritance. Thing is - will the monkey allow his dastardly plan to succeed? This is now almost 90 years old but it is still hard to see how - even in the most dark and dingy drive-in - it could ever have been scary, but it is still quite enjoyable to watch for an hour with some extremely basic acting and special effects that raises a smile rather than a goosebump.