Diane Gables (b. 1970; d. 2012) was a stockbroker in Los Angeles and a resident of Studio City.
In 1999, she was interviewed by as a witness who claimed to see a man fleeing the scene of the Roy McIntyre murder.
In 2007, she was photographed by a traffic camera two blocks from the scene of the Raymond Randolph murder, and was interviewed by LAPD detectives Jerry Edgar and Manuel Soto.
In 2012, an analysis by the Data Evaluation and Theory Unit identified Gables as a common link between the McIntyre and Randolph murders, prompting Edgar and Harry Bosch to revisit Gables. The woman was later shot and killed by SWAT sharpshooters in her home because it appeared that she may have meant to do Bosch harm after admitting to him that she killed a total of nine men who she believed had escaped justice.