decades, Button and his supporters – including Christian and Blackburn – continued to press for a retrial, a campaign that included a well-publicised 1998 simulated reenactment of Anderson's death, conducted by crash test experts, with both a Holden matching one believed to have been used by Cooke on the night in question, and three Simca Aronde sedans like the car owned by Button, which were driven toward a crash test dummy. The dummy was thrown over the roof of the Holden, as Cooke had claimed, and the damage sustained matched the records of a panelbeating business that had, in 1963, repaired the vehicle driven by Cooke. The experts found that the sun visor flexed when hit by a body and returned to its original shape, without cracking the paint. An expert from the United States was brought to Australia to prove Cooke's car, not Button's, hit Anderson. Acquittals Despite Cooke's 1963 confession, Beamish served 15 years, while Button was sentenced to 10 years and ended up serving five. In 2002, the Court of Criminal Appeal quashed Button's conviction. Button's success opened the way for an appeal by Beamish, who was acquitted in 2005. In both cases, the appeal judges found that the murders had most likely been committed by Cooke. On 2 June 2011, Beamish was granted a A$425,000 ex gratia payment by the Western Australian government. Media Estelle Blackburn spent six years writing the biographical story Broken Lives, about Cooke's life and criminal career, focusing particularly on the devastation left on his victims and their families. New information on Cooke and fresh evidence published in the book led to the exonerations of Button and Beamish. Another book was Presumed Guilty by Bret Christian. In Randolph Stow's final novel, The Suburbs of Hell (1984), he acknowledged that there was a delayed response to the horror of Cooke's murders, which he transposed for fictional purposes from his WA origins to a town resembling the English town he then inhabited, Harwich. Suzanne Falkiner's biography of Stow revealed that it piqued his sense of humour that Perth denizens at the time of the murders would knock on doors and say 'It's the Nedlands Monster'. A 2000 memoir by Robert Drewe, The Shark Net – later made into a three-part television series – provided one author's impressions of the effect the murders had on the Perth of that era. According to Drewe, more people