Dec 2 2018 Police seek tips about Oregon Coast cold cases "In the meantime, his stepdaughter Rachanda Pickle disappeared. New evidence suggested Ackroyd killed Melissa Sanders and Sheila Swanson, who went missing in 1992 during a camping trip north of Newport. Where is Pickle’s body? Did anybody see teenagers Sanders and Swanson on Highway 20 before they vanished in 1992? Investigators believe state highway mechanic Ackroyd is responsible for the disappearances of all three teenagers in addition to the murder of Turner. Ackroyd raped Marlene Gabrielsen in 1977, though he wasn’t charged in the attack. Decades have passed, but detectives hope that renewed attention to the cases might jog memories or provide new information that can shed light on what happened to the women. To the police and prosecutors who tracked him, Ackroyd is a confirmed serial killer."