Gloria Choi and her friends called Lakewood, Washington, 911 four times in 48 hours to report her being stalked by an ex-boyfriend. Two days later, he ran her off the road and riddled her truck with bullets as she was on the line with a 911 dispatcher.

Original source: https://www.cbsnews.com/news/gloria-choi-billy-rickman-washington-murder-captured-on-911-call-48-hours/