Ronnie McGrath’s death first presents itself as an overdose in a derelict house, then becomes a suspected murder shaped to look like both an overdose and an occult tableau. The distinction matters: the heroin in Ronnie’s body was later found to be lethally contaminated, while a separate packet at the scene appeared clean. His body had also been moved and arranged in the living room. Together, those details turn the apparent explanation of his death into a question about who controlled the drug supply, the scene, and the story told by the evidence.

Setting and discovery

The death occurs in Pilmuir, an estate whose neglected condition forms part of the scene’s context. Its open areas are overgrown, playgrounds damaged, and many houses boarded up or deteriorating. A short distance away, a developer advertises new private apartments as Muir Village. John Rebus reads the contrast as more than a difference in housing: the new development’s polished name does not change what Pilmuir is for the people left behind. Ronnie’s death is discovered in this landscape of neglect, rather than in the city’s more reassuring public image.

The house itself has boarded windows and an open door. Inside, the rooms have become a makeshift shelter for people without homes; the person who died there is one of them. In the living room, two candles stand on the bare floor, burned down around Ronnie’s body. He lies on his back, legs together and arms outstretched, an arrangement that recalls a cross. A jar that once held instant coffee contains disposable syringes. The combination of candles, body position, syringes, and a large five-pointed star drawn within two concentric circles makes the room look deliberately composed rather than merely occupied.

The scene is recorded by a police photographer who explains that Superintendent Watson has ordered photographs of drug-related incidents for a publicity campaign. John Rebus asks him to photograph the symbol on the far wall as well. That detail links the immediate investigation to the way the case is being documented: the official campaign is concerned with drugs, while the image on the wall introduces a second, more sensational possible interpretation.

Physical and toxicological evidence

The police doctor initially identifies the death as a heroin overdose. A small packet is found in Ronnie’s hand, and another full packet is present. Early on, the physical evidence complicates that straightforward account: the doctor notes extensive bruising, suggesting a heavy fall or some kind of physical confrontation. A later account from Dr Enfield adds that Ronnie’s stomach was almost empty and that he was HIV negative. The bruising and circumstances therefore sit alongside, rather than replace, the initial evidence of drug use.

The toxicology changes the meaning of the packets. The heroin in Ronnie’s body is reported as 95 percent impure. Dr Enfield is still determining what it was diluted with, but gives ground-up aspirin or rat poison as possibilities, emphasizing the likelihood of poison intended to kill rodents. He concludes that the substance was lethal and warns that whoever sold it was effectively selling a fatal dose. The clean packet at the scene now looks consequential: John Rebus considers the possibility that someone left it to encourage testing of a harmless sample and make Ronnie’s death appear to be an ordinary overdose. That remains a hypothesis in his reconstruction, not a proven account of the killer’s plan.

Reconstruction and competing explanations

A later return to the house makes the arrangement central to the investigation. John Rebus shows Tony McCall where Ronnie was found and points out that the body’s position does not look accidental. Tony recognizes the implications: Ronnie was already dead, then brought downstairs and laid between candles. This matches the account that Tracy found him in his bedroom and believed he was already dead, while by the time police arrived his body had been moved to the living room. The candles were almost entirely burned down by then.

In an interview with Charlie, John Rebus lays out the suspected sequence more directly. He says Ronnie was murdered, or nearly so in the sense that someone supplied the lethal substance, and explains that the poison was in Ronnie’s body. He also identifies the move from bedroom to living room and the placement beneath the pentagram as deliberate staging. Charlie reacts with shock, but his reaction does not itself establish who arranged the scene or why. The evidence supports a distinction between the fatal poisoning and the later arrangement of the body; it does not, by itself, identify the person responsible for either act.

The occult appearance remains an interpretation to test, not a conclusion. When John Rebus discusses the possibility of a sacrifice with Matthew Vanderhyde, Vanderhyde argues that human sacrifice is unusual among Satanists and that sacrifice ordinarily requires blood. An overdose followed by a staged scene, he suggests, is more plausibly a murder made to look ritualistic after death. His explanation does not settle the case, but it redirects attention from the symbol’s apparent meaning to the practical sequence of events: poisoning, death, movement, and arrangement.

Investigative significance and aftermath

The case also exposes how easily the visible signs of a drug death can narrow attention. The doctor warns John Rebus that intravenous drug use in Edinburgh is widespread, challenging his assumption that heroin users generally take it another way. The scale of drug use gives the apparent overdose a plausible public-health context, but it cannot explain the lethal contamination, the bruising, or the moved body. Ronnie’s dependence and the dangerous supply are distinct parts of the circumstances, not interchangeable explanations for his death.

John Rebus’s written reconstruction remains unsettled. He notes that Ronnie injected himself, that he had been deprived of his supply despite the city’s available drugs, that his body was moved, and that a clean packet might have been left to make the death look accidental. He also recognizes that some links in this account are conjectural. The clean packet and contaminated heroin suggest an effort to misdirect, but the precise motive and sequence are not established simply by their presence. The event’s investigative force lies partly in this gap between a suspicious scene and a case that can be proved.

The wider story ends without a full public accounting of the connected criminal world. Later reporting describes a small scandal involving Finlay Andrews’s club and Malcolm Lanyon’s death, while withholding details of the club’s activities; James Carew’s death is publicly treated as unrelated. These later developments do not resolve who killed Ronnie or how the staging was organized. They echo the case’s central tension instead: the evidence points toward deliberate concealment, while the official story and the available proof remain narrower than the questions raised by the scene.