" convinced was a mark left by the killer. It was a circle two inches in diameter on the upper right hip. Within the circle was a crossword with the letters A-S-P arranged horizontally and vertically with the S in common. The letters of the crossword were backwards on the victim’s body, indicating that they read correctly on the device or tool used to make the mark. The circle around the crossword appeared to be a snake eating itself but the blurring of the bruising in the tissue made this impossible to confirm. "

― Michael Connelly , Dark Sacred Night (Renée Ballard, #2; Harry Bosch, #21; Harry Bosch Universe, #31)