Geoffrey Adams expected to die before sentencing for killing his wife Colleen in 1973 Posted MonMonday 14 updated MonMonday 14 Geoffrey and Colleen Adams on their wedding day. ( Print text only Cancel South Australia's oldest-ever solved cold case disappearance will end without wife-killer Geoffrey Gordon Adams being sentenced for manslaughter. Key points: In August, he was found guilty of manslaughter rather than murder He is expected to die of brain cancer before he can be sentenced Supreme Court Justice David Peek allowed the media to report that the 72-year-old was dying of cancer. Adams pleaded guilty to manslaughter but denied he murdered his 24-year-old wife Colleen Adams inside their matrimonial home at Maitland, on the Yorke Peninsula, in November 1973.