[3] At around 4:30 p.m. on Friday, 27 November 1987, Sian Kingi, a twelve-year-old schoolgirl, was last seen riding her yellow 10-speed bicycle home after school near Pinnaroo Park in Noosa Heads.

When her mother arrived home and Kingi was not there as expected, it was assumed that she had met friends from her school or her volleyball team and was delayed.

By 8 p.m., Kingi's parents began retracing her steps, and after retrieving her abandoned bicycle from the park, visited the local police to report the disappearance.

Police had little to go on until the discovery of Kingi's body on 3 December 1987, 15 kilometres away in a dry creek bed in the Tinbeerwah Mountain State Forest (now called Tewantin National Park).

[5] Attention then turned to a dusty unidentified white 1973 Holden Kingswood station wagon with interstate registration that had been seen in the general area.

Beck and her husband Barrie Watts, who had married a year earlier, had been living in Perth, but had moved to Victoria before renting a property in Lowood, Queensland.

Fortunately, the owner of the property had received a money order for rent from the couple on 10 December from The Entrance, New South Wales.

[4] After a number of previous attempts on other victims in Ipswich, they noticed Kingi, and Beck stopped her on the premise that she was looking for her lost poodle.

[4] During trial, it was revealed that Barrie Watts was an orphan with a long criminal record who had met Beck in 1983 and married her in 1986 in Perth.

[10] Police hoped to obtain a deathbed confession regarding three other unsolved Brisbane-area murders of young women,[3] but Beck died on 27 May 2008 without regaining consciousness.