Sixteen-year-old Pauline Robbin Burgette, known as Robbin, was found murdered in her duplex near 26th Street and McDowell Road in Phoenix on the evening of March 12, 1978. Her 11-year-old brother Chad returned home early, discovered the door slightly ajar and, after getting no answer, entered her bedroom and found her dead. An autopsy showed Robbin had been sexually assaulted and suffered numerous stab wounds.

There were no obvious signs of forced entry, so investigators believed she may have let one or more people into the home. Detectives examined her social circle, including boyfriends and ex-boyfriends, and followed leads about women who reportedly threatened her at an apartment complex where she babysat because of advances from their husbands. A man who allegedly harassed her while babysitting was also investigated.

Crime-scene evidence produced DNA profiles from at least two unknown individuals, suggesting more than one person may have been present, but those profiles have not matched any database entries. No arrests have been made and the case remains unsolved; a reward is being offered for tips that lead to an arrest.

Did anyone who knew Robbin in Phoenix in 1978 have information about her friends, babysitting jobs, or people who might have been at her duplex that weekend?