Deborah Dainton [Samantha Eggar] suffers from a limp brought on by polio, and the lingering effects of treatment in her childhood leave her claustrophobic and wary of large crowds. Her tightly controlled, solitary life begins to shift at a party she attends to please her parents, where she meets a determined, ambitious painter named Leigh Hartley [David Hemmings]. Although Deborah is initially disinterested, Leigh’s persistence gradually wins her over, leading to a first date that marks the slow thaw of her carefully maintained defenses.
When Leigh comes to Deborah’s home for coffee, he asks to paint her portrait. She resists at first, but after some hesitation she consents, opening a door to a new sense of companionship. A little later, Deborah accompanies Leigh as he tries to pitch his work to a museum; the curator bluntly rejects him, a setback that underscores the financial fragility of Leigh’s artistic dreams and foreshadows the couple’s fragile future. The pair attempt to consummate their budding relationship, but Deborah experiences a panic attack in the moment, a reminder of her insecurities. Leigh reassures her—“I don’t mind”—and then surprises her with a practical plan: he proposes that Deborah move in with him, a step that her parents greet with mixed emotions but Deborah herself agrees to, drawn by a longing for connection and a sense of freedom she hadn’t allowed herself to feel before.
The dream hits a snag when Deborah discovers that Leigh has been married. She confronts him, and his apology is earnest but evasive, insisting that his double life was not meant to derail what they are building together. He insists it won’t ruin their bond, and for a time the couple seems to navigate the tangle of truth and deception as best they can.
A shared vision of independence draws them toward a plan to buy an antique shop, using Leigh’s art and Deborah’s knack for finding valuables to fuel a future business. Leigh’s mood darkens with the reality of money and risk, and he suggests a theft as a shortcut: a vault in an antiques shop worth about £200,000. Deborah is uneasy, but Leigh argues that they could still steer a legitimate path later, and he promises he will not personally participate in the theft. To seal the deal, he asks Deborah to provide security details to his fellow thieves, assuring her that they will share the spoils.
Reluctantly, Deborah agrees, reasoning that Leigh would still be drawn into the crime even if she refused. Her sense of right and wrong is gradually eroded as the heist approaches, especially when a guard, bribed to facilitate entry, falls ill at the critical moment, allowing the team to move inside. The robbery goes off without a hitch, and Deborah, despite lingering guilt, avoids police scrutiny and resumes her life with Leigh, hoping the moral stain will fade with time.
Yet the seeds of doubt sprout when Deborah encounters a woman who had previously appeared at Leigh’s home before the robbery. Leigh had claimed she was a neighbor visiting to inform him that his father was ill, but the woman reveals she is actually Leigh’s mother and that his father is entirely well. This revelation prompts Deborah to do more digging, and she begins to see a pattern: Leigh and his associates had anticipated her every move from the start, designing the entire sequence so that she would be the insider who opened the door for the thieves. The “guard” was never bribed; the setup relied on Deborah’s willingness to play along.
Confronting Leigh with these findings, Deborah is met with a confession, yet Leigh’s emotion shifts to something surprisingly intimate—he declares that he has grown to truly love her. He begs Deborah to stay, but the weight of the truth—and the realization that the trap had been laid for her from the very beginning—proves too heavy to bear. In a final, solitary act, Deborah contemplates the collapse of their fragile love as Leigh murmurs, “Is that how fragile love is? All at once everything? All at once nothing?”
With a quiet determination, she sends a letter to the inspector investigating the robbery, a letter that names all of the participants she believes were involved. The film closes with the audience left to interpret the outcome and the fate of the characters, as Deborah stands alone amid the consequences of her choices and the upheaval of a relationship shaped by desire, deception, and a perilous dream of freedom.
