The Reptile

The Reptile is a 1966 horror film made by Hammer Film Productions. It was directed by John Gilling, and starred Noel Willman, Jacqueline Pearce, Ray Barrett, Jennifer Daniel, and Michael Ripper.

The sinister Dr. Franklyn Noel Willman, the owner of the nearby Well House, is the only resident in the vicinity of the cottage, and he lives with his daughter Anna Jacqueline Pearce. The Doctor treats his daughter with cruel contempt, and she is attended by a silent Malay servant Marne Maitland.Hoping to learn something of the deaths, Harry invites the local eccentric, Mad Peter John Laurie, home for dinner. After warning them that their lives are in danger, Mad Peter quickly departs only to return later that evening foaming at the mouth, with his face blackened and swollen. He dies within a few minutes. The Spaldings attempt to alert Dr. Franklyn, but Franklyn arrogantly states that Peters death is not his concern. ........

Source: Wikipedia