been previously investigated by police but no evidence had been found that he was involved in the Beaumont case. Harry Phipps Harry Phipps (died 2004), a local factory owner and then-member of Adelaide's social elite, came to attention as a possible suspect after the publication of the book The Satin Man: Uncovering the Mystery of the Missing Beaumont Children in 2013. The book did not name the identity of the Satin Man, but Phipps's estranged son, Haydn, named him soon after the book's publication. Phipps bore a substantial likeness to the identikit of the man seen talking to the Beaumont children at Glenelg Beach. He was wealthy and known to be in the habit of giving out £1 notes, was later alleged to have paedophile tendencies, and lived only 300 metres away from the beach on the corner of Augusta Street and Sussex Street. Haydn, who was aged 15 at the time of the disappearance, came forward to researchers in 2007 with the claim that he had seen the children in his father's yard that day. Two other persons, youths at the time, said that they had been paid by Phipps to dig a 2 × 1 × 2-metre hole in his factory yard that weekend, for unstated reasons. In November 2013, a one-metre-squared section of a factory in North Plympton, which had been owned by Phipps, was excavated. A ground-penetrating radar found "one small anomaly, which can indicate movement or objects within the soil", but the dig found no additional evidence and investigations into the site were closed. On 22 January 2018, Adelaide detectives announced that they would return to the factory site and conduct further excavations, after a private investigation sponsored by Channel Seven Adelaide. The excavation, on 2 February 2018, took nine hours. Animal bones and general rubbish were found, but nothing related to the Beaumont case. Possibly related cases Joanne Ratcliffe and Kirste Gordon In 1973, two children, Joanne Ratcliffe (11) and Kirste Gordon (4), disappeared from the Adelaide Oval during a football match, and they are presumed to have been abducted and murdered. Ratcliffe's parents and Gordon's grandmother had allowed the girls to leave their group to go to the toilet. They were seen several times in the ninety minutes after leaving the Oval, apparently distressed and in the company of an unknown man, but they vanished after the last reported sighting. The police sketch