Joseph James DeAngelo, aka the "Golden State Killer", is a former police officer who lived a double life as a burglar, serial killer, and rapist. He managed to hide in plain sight, eluding capture for over four decades.
Starting in 1974, the monster committed over 50 rapes, 13 murders, and 120 burglaries across California before going dormant in 1986. He would also send letters and make calls taunting police and further threatening his victims.