Tatiana Tanya Blackwell was 14 when she disappeared from Pacifica, California after leaving home to visit a nearby 7-Eleven on January 24, 1976. Her body was found on June 6, 1976 in a wooded area off Sharp Park Road. She had been stabbed to death.

Tatiana’s killing fits the pattern of the Gypsy Hill Murders that struck San Mateo County between January and April 1976: victims—many young women and girls—were found in secluded wooded spots, stabbed multiple times, and in many cases sexually assaulted. The similarities led investigators to suspect a serial killer. Decades later new DNA linked Rodney Halbower to two Gypsy Hill victims; authorities have identified him as a primary suspect in Tatiana’s case but she has not been formally charged to this date and the murder remains officially unsolved.

Does anyone who knew Tatiana, or who was in Pacifica in early 1976, have information that could help bring clarity to her case?