In the first part of a multi-part series focusing on the infamous, decades-long mystery of the Golden State Killer - and the recent arrest of a suspect after 42 years - Melissa investigates not only the story itself but her own fascination - even obsession - with the case.  In this installment - "The Early Years" - Melissa pieces together facts from John James DeAngelo Jr.'s youth and his youthful career as a police officer to describe in detail each step of what now appears to be over 50 years of terror and terrorizing.  Each of the East Area Rapist's attacks are listed, in order, providing dramatic, staggering illustration to the enormity of his crimes.  The story is often frustrating - as demonstrated by the numerous missed opportunities to stop the killer's spree before it became epidemic - but also engrossing and compelling.  Now with the murderer's face is finally in the light, Melissa journeys into the place where the darkness first descended.