Trudie Jeanette Adams disappeared in the early hours of 25 June 1978 after attending a dance at the Newport Surf Life Saving Club, New South Wales, Australia. She left the event early before hitchhiking home, at which point she entered a vehicle on Barrenjoey Road and has not been seen since. Her disappearance is significant in that it sparked New South Wales' biggest missing person search at the time, sparked extensive and ongoing national media attention, and eventually a A$250,000 reward.