Hildur Knútsdóttir was born in Reykjavík, Iceland, in 1984. She has lived in Spain, Germany, and Taiwan and studied literature and creative writing at The University of Iceland. She writes fiction both for adults and teenagers, as well as short fiction, plays, and screenplays. Hildur is known for her evocative fantastical fiction and spine-chilling horror. The Night Guest is her first book translated into English. She lives in Reykjavík with her husband, their two daughters, and a puppy called Uggi.