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1930s murders in Western Australia

The Murchison Murders were a series of three murders, committed by an itinerant stockman known as "Snowy" Rowles (born John Thomas Smith), near the rabbit proof fence in Western Australia during the early 1930s. Rowles used the murder method that had been suggested by author Arthur Upfield in his then unpublished book The Sands of Windee, in which he described a foolproof way to dispose of a body and thus commit the perfect murder.

Rowles was born in 1905 in North Perth, Western Australia. His original name was John Thomas Smith. Prior to the murders, Rowles served three months in jail for theft.

Upfield had already written three novels, but was working as a fence boundary rider on the rabbit proof fence in Western Australia. He had decided to write another detective novel, but with a plot difference; there being no body for the detective to find. Unfortunately, he could not think of a way to dispose of a body. He mentioned this difficulty to a colleague, George Ritchie. Ritchie devised a disposal method: burn the victim's body along with that of a large animal, sift any metal fragments out of the ashes, dissolve them in acid, pound any remaining bone fragments into dust, then discard the remains into the wind. But Upfield then had a problem; the method was too efficient as it left Bony (Upfield's fictional detective) with no way to detect or prove the murder. Upfield challenged Ritchie to find a flaw in the method and offered him £1 if he could. Ritchie, however, was unable to do so. The plot of the novel hinged on this point and Ritchie one day met Rowles, whom Upfield also knew. Ritchie mentioned the problem to him. All of Upfield's friends and colleagues were soon aware of Upfield's difficulties with his plot. On 5 October 1929, Upfield, Ritchie, Rowles, the son of an inspector of the fence, and a north boundary rider for the fence, were all present at the Camel Station homestead when the murder method for Upfield's book was again discussed. Upfield was clear that Rowles knew of the murder method before this date, but the meeting and discussion were later used as evidence in court to prove that Rowles was aware of the method.

In December 1929, Rowles was in the company of two men, James Ryan and George Lloyd. On 8 December 1929, Rowles, Ryan and Lloyd departed from Camel Station. Several days later, Ritchie arrived at Camel Station claiming he had met a prospector named James Yates. Yates had told Ritchie that he had seen Rowles driving a car; Rowles told Yates that Ryan and Lloyd were walking through the scrub, though Yates did not see them himself. On Christmas Eve, 1929, Upfield was with a colleague in the small town of Youanmi when he met Rowles, who told him that Ryan had decided to stay in Mount Magnet and had lent him his truck. Rowles later told another person he had purchased Ryan's truck for £80. A New Zealander named Louis Carron had arrived in the Murchison area in 1929, having come from Perth with a friend. He'd found a job at Wydgee Station. In May 1930, Carron left his employment in the company of Rowles. Rowles was only tried for the murder of Carron. Following the murders of Ryan and Lloyd, Rowles had strictly followed Upfield's fictional method for the disposal of evidence, leaving a total lack of physical evidence that could be used in a court. In the case of Carron, he had omitted one of the steps – destroying all metal remains with acid – thereby allowing several items which belonged to Carron to be found and identified. Like Rowles, Carron had assumed a new name, previously having been known as Leslie George Brown. He was sentenced to death, and his attempts to appeal his conviction were rejected. Rowles was hanged at Fremantle Prison on 13 June 1932.

Besides his novel The Sands of Windee, Upfield wrote a book about the real life case entitled The Murchison Murders. In 1993, author Terry Walker wrote a book Murder on the Rabbit Proof Fence documenting the case. In June 2009, the Australian Broadcasting Corporation produced a telemovie based on the Murchison Murders, starring Robert Menzies as Upfield and Luke Ford as Snowy. 3 Acts of Murder was directed by filmmaker Rowan Woods.