The Wanda Beach Murders refers to the case of the unsolved murders of Marianne Schmidt and Christine Sharrock at Wanda Beach near Sydney on 11 January 1965. Their partially buried bodies were discovered the next day. The victims, both aged 15, were best friends and neighbours. The brutal nature of the slayings and the fact that the twin killings occurred on a deserted, windswept beach brought publicity to the case. It remains one of the most infamous unsolved Australian murder cases of the 1960s. en.wikipedia.org/wiki/Wanda_Beach_Murders