Gary Ridgway, one of the country’s most notorious serial killers, is reportedly dying in a Washington prison. Ridgway, known as the Green River Killer, is now 76 years old and is receiving end-of-life care in the Washington State Penitentiary in Walla Walla, according to several sources with “knowledge of his condition” who spoke with Washington-based radio station KIRO. He’s been in prison since 2003, when he pleaded guilty to killing 48 women in the ’80s and ’90s. Ridgway has maintained over the decades that he is responsible for killing somewhere between 75 and 80 women during his reign of terror....