
Lois Duncan Steinmetz, known as Lois Duncan, was an American writer, novelist, poet, and journalist. She is best known for her young-adult novels, and has been credited by historians as a pioneering figure in the development of young-adult fiction, particularly in the genres of horror, thriller, and suspense.
Excerpt from Wikipedia, available under CC BY-SA 4.0.

I Walk at Night
2002
ISBN 9780142300909
I Know What You Did Last Summer
1987
ISBN 9780671639709