An American writer of fiction based on the Buffy the Vampire Slayer, Angel, and Smallville television series, she also won four Bram Stoker Awards for her horror-themed short stories. Her popular serial works include Wicked; Gambler's Star; Crusade; and Wolf Springs Chronicles.
She dropped out of school at the age of sixteen and moved to Germany to train as a ballet dancer. She later returned to the United States and graduated from the University of California at San Diego.
She published her first novel, Jessie's Song, in 1983.
She was born in Los Altos, California. She collaborated with her daughter, Belle Claire Christine Holder, on several short stories.
She wrote several books based on Buffy the Vampire Slayer, a popular television series that starred actress Sarah Michelle Gellar.