Mystery writer Willo Davis Roberts died November 19 of congestive heart failure. She was 76.

Roberts, who completed her 100th book before she died, has written mostly for children the past 30 years. The genre fit her well, for she won Edgar Awards for three of her young adult mysteries.

Roberts sold her first book, Murder at Grand Bay, in 1955. She continued to write as she raised four children and, during the 1960s and '70s, worked as a full-time medical secretary. Roberts was still writing, up until the hours before her death.