The summer before Laci Peterson went missing, a human torso clad in maternity clothes washed ashore on San Francisco's Embarcadero.

City police sent the remains for DNA testing, and in August 2002 they got a match. The body was Evelyn Hernandez, a 24-year-old Salvadoran immigrant reported missing along with her 6-year-old son Alex.

In the year since Hernandez's body was found, there has been no sign of Alex Hernandez and no arrests have been made.

Alex and Evelyn Hernandez

San Francisco police, however, maintain that the investigation into Hernandez's murder "is open and active."

Among the clues is Hernandez's wallet, which was reportedly found two blocks from where her mechanic boyfriend worked. According to news reports, Hernandez and her boyfriend clashed shortly before her disappearance when she discovered he was married. He reportedly has not cooperated with homicide detectives.