Serial Killer Herbert Mullin terrorized the Santa Cruz, California, area at the same time the infamous Co-Ed Killer, Edmund Kemper, was active. Unlike Kemper, Mullin killed anyone. Young, old, men, women, children, and even a priest in a confession booth. He didn’t adhere to a particular MO. The deadly voices told him to kill… and he killed. DEADLY VOICES: The True Story of Serial Killer Herbert Mullins-C.L. Swinney