David's cruelty finally got to Catherine who couldn't . Catherine Birnie then strangled Susannah to death. (He) should never be let out of prison.. Kate hid the pills under her tongue and later put them under the mattress, figuring if she went to sleep Id never wake up. In 2009, after her first parole application was declined, her case papers were She informed the shop owner that she had been raped. Tim Clarke. David John Birnie has a net worth of $5.00 million .
David John Birnie (16 February 1951 - 7 October 2005) and Catherine Margaret Birnie (born 23 May 1951) were an Australian couple from Perth, Western Australia. No one claimed his body, and he was buried in an unmarked paupers grave. Birnie is one of that rare breed - a female serial killer. Catherine met David Birnie at age 12 and began a relationship with him two years later. Serial killer David Birnie put much thought and time into how to hang himself in his protective custody cell at Perth's Casuarina prison, a coronial inquest . she said.