Movies by M.O. Penn
The Taint
Vera Knight is hired to assist a biologist, Madame Bartlett. Since Vera is a naive girl from the country, she falls prey to the charms of Madame Bartlett's secretary and bookkeeper, Paul Chilton. The inevitable happens, and she goes home to give birth to a little boy while Chilton makes excuses for not marrying her.

Race Memories
Denton, an anthropologist of note, meets by accident a new neighbor, an attractive girl, whose father insists upon her marriage to a man whom he favors because of his wealth. Denton and the girl are mutually attracted and to Denton comes a vague but haunting belief that they have met before. Worn out by overstudy, he becomes seriously ill with rain fever and the mind pictures he has of his fair neighbor fade into a vision of a prehistoric existence, where he wanders as a stone age savage, meets and loves the girl of his heart, who also lives...
The Depth of Hate
Helen Embert, the lodge keeper’s daughter on the estate of wealthy widow Mrs. Melvina Jenkins is in love Bert Harrison. When by happenstance Bert saves Mrs. Jenkins and her daughter Mary from an accident he is instantly smitten with Mary. Feeling rejected, Helen pines away, expiring soon after. Helen’s mother, consumed with revenge, sets her sights on extracting it upon Mary but is prevented from harming her in the nick of time.