The Main Chance was a British television series which first aired on ITV between 1969,1970,1972 and 1975. A drama, it depicts the sudden transformation in the life of solicitor David Main who relocates from London to Leeds.

Themes of voyeurism and unrequited love compliment Poe's classic of murder and insanity in this superbly suspenseful loose interpretation. Anxiety-stricken librarian Edgar Marsh becomes infatuated with his next-door neighbor, but when he can't have her, he resorts to murder.