Law enforcement in Napa County traces its roots back to the days of Spanish rule and was formalized when California became a state in 1850. Since then, those who wear the badge have pursued the lawless in search of justice. Chuck Hansen, who started as a patrol officer, pioneered the use of forensic science at the Napa Police Department, collecting DNA evidence in 1974 that would become key in solving a murder decades later. And the killer known as "Willy the Woodcutter" was caught thanks to the expertise of Hal Snook of the Napa County Sheriff's Department. Napa police sergeant Todd Shulman brings to life the stories of those who played a part in solving some of wine country's most infamous crimes.