The Doodler:

“The black doodler” as he was named by the media, or simply, “The doodler”, was a serial killer active between 1974 – 1975 in the state of California.

He was described a black male, aged between 19 and 22, with a tall, slim build and stood around 6 foot tall.

The Doodler would meet his victims in the restaurants, bars and gay clubs that he would frequent, where he would strike up a conversation with patrons as he drew sketches and portraits of them.

He would then leave the establishment with them to engage in sex with the victims, before stabbing them to death and leaving their corpses next to bays and harbors.

The doodler was awarded the responsibility of taking the lives of fourteen men, and left three survivors scarred for lie. The survivors did not want to give evidence, because it would mean coming out publicly in an era where homosexuality was far from accepted. In fact, it was barely tolerated and had only been declassified as a mental disorder in 1973, a year previously.

The Doodler was never caught.

Sources: https://en.wikipedia.org/wiki/Doodler
http://www.theawl.com/2014/12/the-untold-story-of-the-doodler-murders
http://truecrimediva.com/who-was-the-doodler/