In 1986, the quiet Perth suburb of Willagee hid a secret darker than anyone could imagine.
Behind the door of 3 Moorhouse Street, David and Catherine Birnie lured young women into what looked like an ordinary home — but it was a house of torture and death.
Over just four weeks, four women vanished: Mary Neilson, Susannah Candy, Noelene Patterson, and Denise Brown. Each was trapped, brutalised, and murdered. The Birnies thought no one would ever know.
Then came Kate Moir — a 17-year-old who escaped barefoot into the night and ended a month-long killing spree that shocked Australia.
This multi-part investigation traces the childhoods, crimes, and psychology of Australia’s most infamous killer couple — and the survivor whose courage brought them down.
Featuring real court records, survivor accounts, and archival reporting from ABC News, The West Australian, Crime Investigation Australia, and Casefile True Crime.