Celebrated crime author Ann Rule died on Sunday at age 83. Rule was known for writing an in-depth profile of her co-worker Ted Bundy, among dozens of other true crime novels.

Rule was at Highline Medical Center when she passed at 10:30 pm Sunday night. "My mom died peacefully last night," Ann's daughter, Leslie Rule, said on Facebook, according to Seattle PI. Her message stated that Ann Rule was surrounded by her children, grandchildren, and great-grandchildren at the time of her death.

Rule's first book was "The Stranger Beside Me," a novel about serial killer Ted Bundy. She and Bundy worked together in Seattle, Wa. at a suicide hotline, according to Fox News. Ted Bundy is believed to be connected to at least 36 murders.

Ann Rule was in medical care after having a heart attack last week, according to My Northwest. During her career, Ann Rule wrote more than 30 books and 1,400 articles. Most of her work was about true crime, and she sometimes aided real investigations. She was a part of the Green River Task Force, a group put together for the express purpose of catching a serial killer. Rule wrote "Green River, Running Red" about this case.

All of Ann Rule's books can be purchased online in ebook format.