Tammy Lynn Jarschke was 13 and from Seaside, California, when she ran away from a foster home on June 24, 1981, with a 14-year-old friend, Tanya Jones. Their bodies were found months later in a remote forested area near Chews Ridge in Monterey County. Investigators reported the girls had been bound to trees with electrical wire, tortured, and murdered.

Decades passed before the case was solved. Advances in forensic technology and renewed investigation ultimately led to the arrest and 2013 conviction of Joseph Michael Nissensohn for first-degree murder in the deaths of Tammy Jarschke, Tanya Jones and 15-year-old Kathy Graves. The jury found Nissensohn had subjected his victims to extreme pain and torture; he was sentenced to death and is on death row at San Quentin. Tammy’s mother, Penny Jarschke, has said her daughter’s murder completely destroyed her life.

Anyone who knew Tammy, Tanya, or their routines in Seaside in 1981, or who has information about their disappearance, is asked to come forward.