The House in Marsh Road

David and Jean relocate from rented flats to the countryside house Four Winds after Jean inherits the house and £1000. They see the potential of starting anew, but the move introduces them to a troubling atmosphere. The couple's fragile marriage begins to strain as money concerns loom in the background.

The house is revealed to be inhabited by a poltergeist named Patrick, as reported by housekeeper Mrs B. Objects move on their own and mirrors break, signaling a malevolent force. Jean experiences this haunting directly, while David remains skeptical.

David treats Jean badly, preferring the pub to home life. The poltergeist Patrick retaliates by warning him to stop abusing his wife. The tension in the house grows as the haunting seems to target David's behavior.

In the pub The Plough, Morris Lumley tells David about Valerie Stockley, a potential typist who could help with his material. Lumley is an estate agent who later offers to buy the house and land for £6000. David's hopes for a quick sale are sparked, though no deal is made.

David hires Valerie Stockley as his typist, and they begin an affair. She is described as 'Mrs.' though her status is questionable. Jean remains unaware at first while the relationship develops.

David steals money from Jean to give to Valerie, hoping to win her ongoing support and a future with her. Valerie tells him that once her divorce goes through, she'll be free to marry him. The desperate plan tightens the couple's already dangerous dynamics.

Valerie learns Jean controls the property and the money, which upends David's plans. She privately suggests that once divorce is settled, they should marry, but also hints at murder to secure his inheritance. David's ambition darkens as the prospect of killing Jean grows.

David makes an early murder attempt by trying to push Jean down the open lift shaft in the house. Patrick intervenes, closing the safety gate to thwart the act. The poltergeist's interference intensifies as the couple's plans begin to unravel.

David dissolves sleeping pills in Jean's hot milk to finish the job, but Patrick triggers a loud alarm every time she raises the glass. The intervention reveals the attempted poisoning to Jean and heightens the fear that the house itself is protecting her. This escalation shocks both the couple and the house's supernatural claim.

Jean consults a solicitor in London about a divorce, hoping to escape. The solicitor tells her that a poltergeist providing the reason for murder won't hold in court. The legal setback deepens her resolve to end the marriage.

With Jean away in London, David is free to be with Valerie. Patrick punishes them by locking them in the bedroom and setting Four Winds on fire. The house becomes a blaze that traps them behind barred windows.

Jean returns to Four Winds to discover the disaster. Both David and Valerie perish in the fire, trapped behind the bedroom's barred windows. The poltergeist Patrick's presence lingers as the house burns.