One Child is a novel by American author and psychologist Torey Hayden. It was first published in the United States in 1980. This book has been translated into 27 languages and dramatized as an interactive opera. In 1994, the story was adapted as a made-for-television movie on Lifetime), entitled "Untamed Love" and starring Cathy Lee Crosby.
The book opens with Hayden, a special education teacher, reading a newspaper article about a six-year-old girl who attempted to burn a three-year-old boy a couple of days prior. As there was no place for her at the hospital, she ends up as a student in Hayden's class, where she remains for about five months.
The book is based on the author's real life experiences. A sequel, The Tiger's Child, was published in 1995.