Unmasking a Monster: The Wanda Beach Murders & the Chilling Connection to a US Killing Rampage Murdered together: Christine Sharrock and Marianne Schmidt This chilling episode of Catching Evil dives into the notorious Wanda Beach murders in Sydney, Australia, unravelling the shocking secrets behind the brutal killing of two innocent teenage girls, best friends Marianne Schmidt and Christine Sharrock. ​ We expose the seductive yet sinister figure at the heart of this mystery.