In a tense wartime whodunit set inside a rural hospital, the calm of a memory-haunted operating theater is shattered by a string of tragic events and a killer who works in the shadows. <Inspector Cockrill> (/actor/alastair-sim) sits down to draft a brisk report for his Scotland Yard chief, cataloging the “amazing events” that begin on 17 August 1944 with postman Joseph Higgins, the first to die. The opening scene drops us into the operating room and the hospital’s nearby corridors, where the crowd of medical staff and patients moves with practiced urgency. A chilling line anchors the mood: “Two will be dead, one a murderer.”
The country is under the strain of the V-1 offensive, bombs streaking toward home from the continent. Higgins returns to duty as a warden, only to hear a terrifying chorus of mechanical wrath as a doodlebug bombskill rattles the hospital and a radio broadcast—delivered in a moment of eerie serenity by an Englishwoman—speaks in a Nazi voice from the wreckage. Higgins is found unconscious, stripped of identification, his fate tied to a building and a hospital family that cannot quite trust its own echoes of the past.
Within this fragile tapestry, a web of personal tensions emerges. Mr. Eden (/actor/leo-genn) shares a sorrowful moment with Nurse Esther Sanson (/actor/rosamund-john) as the specter of war shadows their lives and the nightmares that haunt the victims of bombing. Nurse Freddi Linley (/actor/sally-gray) tries to navigate her failing engagement to Dr. Barnes (/actor/trevor-howard), an anaesthetist who wields life and death in his careful hands. The atmosphere thickens around Sister Marion Bates (/actor/judy-campbell), who, as the party mood swells at a hospital gathering, reveals she has proofs that Higgins was murdered, even as she moves through the night toward the operating theater to secure her evidence. The already-tense dynamic grows darker as Sister Bates is stabbed, then dressed in a gown and stabbed again—an attempt to hide a motive and mislead the living.
As the hospital reels, Detective Sgt. Hendricks (/actor/george-woodbridge) and Inspector Cockrill begin questioning the core five suspects: Dr. Barnes, Mr. Eden, Nurse Linley, Nurse Sanson, and Nurse Woods (/actor/megs-jenkins). The discovery of Bates’s second, calculated murder sharpens the suspicion, and the clues grow increasingly cryptic when some poison pills vanish from the ward. Barnes presents his side of the medical machinery, and Cockrill recalls that the “vital evidence” may lie just beneath the surface—perhaps literally in the setup of the anesthesia equipment—if someone had paid closer attention.
The investigation deepens as Linley becomes a focal point—suspicions swirl around her, even as she grapples with fear and the weight of the night’s events. A fall down the stairs leaves her with a fractured skull, prompting a critical craniotomy that could unlock the truth about Higgins’s death if she survives. Cockrill asks for a dramatic re-enactment of the operation that killed Higgins, pairing Eden with Mr. Purdy (/actor/henry-edwards) in a test of nerves. Eden’s quick temper flares into a physical confrontation with Barnes, a clash that brings humor and humanity back into a tense inquiry.
A carefully calibrated plan unfolds: Linley is anaesthetized, and Cockrill watches as the medical team attempts a recovery, tracing the subtle but telling signs of distress as she struggles for oxygen. A key change is discovered when the oxygen bottle is swapped for a green-coded carbon dioxide bottle, revealed by Cockrill’s deliberate scratch of the bottle’s surface. The murder weapon, the gown, and a hidden stain align with a new and more precise portrait of the killer’s method. The suspect pool narrows when Sanson’s movements pull her under the inspector’s spotlight, and Eden’s earlier actions are cast in a new light as the room fills with competing motives and the pressure of time.
The final twist hinges on Sanson’s motive and the delicate balance of guilt. Cockrill’s line of questioning intensifies around Sanson, and Eden’s secret intervention—attempting to deliver an antidote to a poison—emerges as a crucial but morally fraught detail. When Cockrill bursts into the next room, he makes a decisive arrest: Sanson is implicated, and Eden’s role becomes central in a revelation that reframes the entire night’s events. The loader of guilt is not a single simple act but a network of choices made under fear and the war’s unyielding pressure. The Inspector’s judgment arrives with a stark turn: Eden is accused of assisting a murderer, and the truth about Sanson—tied to her mother’s death and the air-raid catastrophe—sheds new light on Higgins’s final hours and the hospital’s struggle to protect its own.
In a closing arc that mixes resignation with stubborn duty, Cockrill writes to his superior with a sense of weary honesty. He contemplates resignation, offering it in the hopeful belief that it will not be accepted, a fragile testament to the weight of a man who must decide if his conscience can bear the burden of duty in a hospital overwhelmed by war and the shadow of a killer at work among its wards.
Characters weave in and out of the narrative with the gravitas of actors who bring them to life: Dr. Barnes becomes a center of tension and technical scruple, rivaled by the presence of Mr. Eden and the tense, principled watch of Inspector Cockrill. From the ward’s quiet corners to the operating theater’s bright glare, the mystery unfolds through the intertwined fates of Nurse Linley, Nurse Woods, and Nurse Sanson, all under the critical eye of the hospital’s vigilant staff like Sister Bates and the steady, methodical gaze of the police team led by Detective Sgt. Hendricks. The case resolves not with a single loud confession but with a careful unveiling of a chain of actions and reactions, where the truth about poison, rescue, and remorse exposes a murderer’s calculated plan—and a doctor’s difficult choices in a war-torn world.
