A Killer Left Behind Glitter at a Murder Scene. It Became the Tiny Clue That Helped Catch Him.

Trace evidence can solve murders—but the specialists who study it are disappearing.
AOL

How missed evidence helped a serial killer evade capture for nearly two decades

SEATTLE — For nearly two decades, one of the country's most prolific serial murderers haunted the Pacific Northwest as a faceless specter of death, known only by his notorious nickname: the Green ...