William Suff, a serial killer already on death row for the murders of 12 women, has confessed to the 1986 killing of 19-year-old Cathy Small in South Pasadena. The case, which had gone cold for nearly 40 years, was reopened after a coroner discovered disturbing items in the home of a deceased man near the crime scene, prompting DNA testing that linked Suff to the murder. Suff admitted to stabbing Small in a fit of rage during an argument after she accepted a ride with him, claiming he pushed her body onto the street after the attack. Despite his confession, the Los Angeles County District Attorney's office has chosen not to prosecute Suff for this murder, citing his age and existing death sentence as factors. This decision has been met with mixed emotions from Small's family, who have been seeking closure for decades. The resolution of this cold case illustrates the advancements in DNA technology that have allowed law enforcement to revisit and solve long-unsolved crimes.