Paul Holes recounts his journey from sleuthing-obsessed college student to cold case investigator, exploring the impact his career had on his family and his mental health.

Cold cases are often left unsolved for decades, and homicide investigators rarely have the time or resources to reopen them and give them the attention they deserve.

Fixated on bringing peace and justice to the victims and families whose lives are torn apart by unsolved murders, Paul Holes dedicated his career to solving cold cases, working night and day, both on and off the clock.

Holes was a cold case investigator and forensics expert in Contra Costa County, California for nearly three decades.

Unmasked uncovers the details behind the author's most disturbing murder investigations, the emotional turmoil spawned by his obsessive workaholism, and the moves leading up to the identification and capture of the Golden State Killer, Joseph DeAngelo.