Rupert Darby's death initially treated as suicide

Rupert Darby’s death initially treated as suicide is the moment when a seemingly solved hanging begins to look like another crime. Found suspended from an iron bridge in Sydney Gardens, Rupert has a broken neck and a padlock in his pocket—details that appear to connect him to the locked-room case and Sid Towers’s death. But the third riddle had anticipated the hanging, and Peter Diamond doubts that Rupert killed himself. The scene therefore turns on a distinction between what the physical evidence seems to say and what the investigation has yet to establish.

Discovery and Physical Evidence

About twenty to seven, a jogger on his usual towpath route approached the canal tunnel beneath Cleveland House and Sydney Road. Through the tunnel he noticed something beneath the first wrought-iron bridge. Since he could not run through the tunnel, he went up to Sydney Road, crossed the bridge in Sydney Gardens, and returned to the towpath by a small gate. From closer by, the indistinct object resolved into a body.

By eight, police and other officials had cordoned off the area. The body was photographed where it hung, examined by the police surgeon, and then carefully cut down and lowered into an inflatable dinghy. Rupert wore a black leather jacket, striped shirt, navy corduroy trousers, and black shoes. He was thin, about six feet tall, and appeared to be about forty-five. His broken neck indicated a substantial drop. The surgeon observed that this was an efficient hanging: unlike many suicides, which involve a chair or ladder and often result in a slower death, it had broken the victim’s neck.

The pockets of the leather jacket held a five-pound note, loose change, a ring of keys, and a padlock. An alert constable recognized that the padlock was the same make as the German lock associated with the murder squad’s locked-room investigation. That resemblance was sufficiently striking for the incident room to be notified at once. It gave the apparent suicide an immediate connection to the case involving Milo Motion’s boat and Sid Towers, but it did not establish how the lock had come to be in Rupert’s pocket.

Peter Diamond went without breakfast and drove from his home in Weston to the Royal United Hospital. There, after the body had been brought to the mortuary, he unzipped the body bag and confirmed Rupert’s identity. The noose remained around Rupert’s neck, though the rope had been cut higher up. Diamond wanted to examine the arms and torso for bruising, but respected the pathologist’s authority over that examination; removing the clothes prematurely would have breached procedure. The scene thus supplied important visible facts while leaving physical questions unanswered.

The Riddle and the Hanging

John Wigfull interpreted the death as a possible consequence of police pressure: after Diamond’s inquiries at Rupert’s usual haunts, Rupert might have learned the police were pursuing him and killed himself. Diamond rejected that account. In his view, the timing of the hanging was not explained by something Rupert had decided the previous evening; its outline had already appeared in the third riddle.

The riddle’s lines, “To end the suspense, as yours truly did, / Discover the way to Sydney from Sid,” made the discovery of Rupert’s body seem like a predicted conclusion. Diamond read “end the suspense” in two senses: the hanging left Rupert suspended, and cutting him down ended that suspension. The reference to Sydney had also pointed toward the bridge, but the investigators had guessed the museum instead. The clue was not simply an allusion to a destination; its wording encoded the manner and location of the discovery.

That reading does not mean the police could readily have prevented the death. Diamond admits that the riddles had tantalized them and that identifying the bridge would have required the kind of exhaustive verbal ingenuity associated with the fictional detectives admired by the Bloodhounds. The clue’s force lies partly in hindsight: once Rupert is found, its double meaning becomes visible, while its earlier ambiguity explains why the investigators did not reach the right interpretation in advance.

Suicide or Murder?

Later, Diamond and Julie Hargreaves examined the bridge. The approaches remained cordoned off after the Scenes of Crime officers had finished, and part of the rope was still attached to the iron parapet. Diamond described how a person intent on suicide could sit on the railing with a noose attached to the bridge and jump, producing a quick death. The broken neck was consistent with that possibility, but Julie noticed that Diamond had not actually called Rupert’s death a suicide. He answered that he was not sure.

The absence of a suicide note did not settle the question. Julie observed that a person acting from guilt might be expected to leave a confession, while Diamond cautioned that it was too early to conclude none existed: it could still be at Rupert’s house or in the post. More troubling to him was the padlock. He could see no obvious reason for Rupert to carry it on an ordinary outing, and thought it might have been intended to associate him with Sid Towers’s killing. Even then, the apparent implication of guilt remained only one explanation, not a conclusion.

Julie supplied the counter-reading: if the death was murder, a padlock could be planted in a pocket more easily than a convincing confession could be fabricated. Its apparent evidentiary value could therefore work in both directions. It connected Rupert to the earlier case if taken at face value, yet its conspicuous placement also offered a possible means of framing him. The object that seemed to clarify the death instead sharpened the uncertainty around it.

Investigative Meaning

Diamond’s later assessment places Rupert’s death within a sequence that began, he believed, with someone seeking points—out of frustration, resentment, or a desire to impress—and using the Bloodhounds as patsies. He leaves open whether the first murder was planned or arose as an unintended consequence. For Rupert’s death, however, he considers it more likely that the supposed suicide was staged to make Rupert appear to be Sid Towers’s conscience-stricken killer and to derail the investigation.

That explanation remains an investigative judgment in the evidence presented here, rather than a fact established by the hanging scene alone. The body’s position, the broken neck, and the padlock could support a suicide interpretation, but the predicted hanging and the possibility of a planted clue make that account unstable. Diamond’s conclusion is that the attempt to draw a line under the case has failed. Rupert’s death, instead of closing the inquiry, forces the investigators to reconsider whether the apparent confession of guilt was constructed to misdirect them.