That evening, Wales made, then drugged, their vegetable soup with crushed tablets stolen from his mother to make them drowsy.
[4] Wales had participated at the couple's funeral just three days earlier (seated away from his four older siblings) and was photographed weeping and embracing his elder brother.
[7] The trial judge found Wales, partly due to his low IQ, murdered the couple because he resented his mother, particularly when using her wealth to manipulate him.
[1][9] The book was written without co-operation from the Wales-King family and was based largely on court evidence and police documents.
[1] The book was later adapted as a 2006 television film, The Society Murders for Network Ten, written by Greg Haddrick and Kylie Needham for the production company Screentime.