The Blood Beast Terror is a 1967 'Tigon British Film Productions' horror drama film. It features Peter Cushing, Robert Flemyng, Wanda Ventham, Glynn Edwards, Russell Napier, and Roy Hudd.
A scientist, working with genetics, creates a creature that is capable of transforming back and forth between a giant Death Head moth and a beautiful woman. The creature masquerades as his daughter when she is in her human incarnation and feeds on the blood of her victims when she is in the moth form.