Leena Lehtolainen was born in Vesanto, Finland, to parents who taught language and literature. A keen reader, she made up stories in her head before she could even write. At the age of ten, she began her first book—a young adult novel—and published it two years later. She released her second book at the age of seventeen. She has received numerous awards for her writing, including the 1997 Vuoden Johtolanka (Clue) Award for the best Finnish crime novel and the Great Finnish Book Club prize in 2000. Her work has been published in twenty-nine languages.

Besides writing, Leena enjoys classical singing, her beloved cats, and—her greatest passion—figure skating. Her nonfiction book about the sport, Taitoluistelun lumo (The Enchantment of Figure Skating), was chosen as the Sport Book of the Year 2011 in Finland. Leena lives in Finland with her husband and two sons.