The author passed away on Sunday (24May15). No more details about her death were available as WENN went to press.

She wrote more than 90 novels during her career, and in 1980 she became the first woman to win the British Fantasy Award for her book Death's Master, which was part of her Flat Earth series.

Lee also wrote a slew of children's fantasy books, as well as radio plays and two episodes of U.K. TV series Blake's 7.