
On Blackpool’s Golden Mile, former scientist Jim (Douglass Montgomery) teams up with ex‑army friend Dan (Ronald Shiner) selling a hair‑tonic patent medicine at the fair. After a clash with local toughs over stall space, Jim is drawn to Jane (Hazel Court), who runs a candy‑floss stall. They begin a romance, but Jim hides that he is already married.
Does Forbidden have end credit scenes?
No!
Forbidden does not have end credit scenes. You can leave when the credits roll.
Explore the complete cast of Forbidden, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

Douglass Montgomery
Jim Harding

Hazel Court
Jane Thompson

Michael Medwin
Cabby

Richard Bird
Jennings

George King

Peter Jones
Pete

Sam Kydd
Joe

Kenneth Griffith
Johnny

Bill Fraser
Railway Porter (uncredited)

Andrew Cruickshank
Inspector Baxter

Peggy Ann Clifford
Millie

Mark Stone
Critic

Ronald Shiner
Dan Collins

Patricia Burke
Diana Harding

Garry Marsh
Jerry Burns

Eliot Makeham
Pop Thompson

Frederick Leister
Dr. Franklin

Erik Chitty
Schofield

Dennis Harkin
Bert

Dora Sevening
Mrs. Franklin

Andreas Malandrinos
Café Owner (uncredited)

Gillian Watt
The Girl (uncredited)
Discover where to watch Forbidden online, including streaming platforms, rental options, and official sources. Compare reviews, ratings, and in-depth movie information across sites like IMDb, TMDb, Wikipedia or Letterboxd.
Challenge your knowledge of Forbidden with this fun and interactive movie quiz. Test yourself on key plot points, iconic characters, hidden details, and memorable moments to see how well you really know the film.
Who is Jim Harding's former army comrade who works with him at the fairground stall?
Dan Collins
Jerry Burns
Harry Mason
Tom Riley
Show hint
Read the complete plot summary of Forbidden, including all major events, twists, and the full ending explained in detail. Explore key characters, themes, hidden meanings, and everything you need to understand the story from beginning to end.
In Blackpool, Jim Harding, a trained chemist, has been reduced to making a living by selling potions and medicines from a fairground stall, working alongside his former army comrade Dan Collins. He is trapped in a loveless marriage to Diana Harding, a vulgar, domineering woman with ambitions of breaking into showbusiness, while he finds himself drawn to the kinder, working-class Jane Thompson, who sells candyfloss and ice cream at a neighboring stall. Jim keeps his marriage a secret from Jane as the two begin an affair, even as Diana carries on a separate liaison with the older Jerry Burns, whom she believes can help her theatrical dreams along.
As the affair deepens, Jane remains unaware of Jim’s marital status, and Diana’s own scheming adds fuel to the tension. Jane’s loyalty is tested when Diana confronts her, revealing Jim’s marriage and accusing him of preying on young women, offering cash to end the relationship. Jane refuses to be bought off and challenges Jim to face the truth, while Jim protests that he is trapped in an intolerably unhappy marriage and that Diana’s selfishness has driven him to the edge. He pleads for a divorce, but Diana refuses, fearing what a break with her husband could do to her career.
Desperation pushes Jim toward a drastic plan. Using his chemical knowledge, he concocts pills containing a lethal dose and slips them into Diana’s regular supply. Yet, as he hurries home in a panic, he discovers Diana dead. Frantic, he buries her body beneath the floorboards in his workshop, only to learn later that the deadly pills remained unused in her system. Diana died of natural causes, making his attempt to dispose of the body both incriminating and unnecessary.
Diana’s sudden disappearance arouses the attention of the local authorities, and the investigation proceeds with the implication that Diana’s husband may have murdered her. Jim tries to flee, but the chase tightens through the streets of Blackpool, culminating in a tense confrontation at Blackpool Tower. The case hinges on the fragile line between a man’s desperate act and the unravelling truth of a woman’s illness and a marriage gone sour.
Throughout the ordeal, the film explores themes of marital dissatisfaction, the pressures of ambition, and the consequences of a dangerous plan gone awry. The atmosphere of Blackpool—the fairgrounds, the intimate stalls, and the looming tower—provides a moody backdrop as Jim’s carefully laid scheme collapses under the weight of circumstance, leaving him to confront the consequences of choices made in the shadow of desperation.
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