Jessica Sarah GundersonLeigh Bardugo (born April 6, 1975) is an American fantasy author. She is best known for her young adult Grishaverse novels, which include the Shadow and Bone trilogy and the Six of Crows and King of Scars duologies. She also received acclaim for her paranormal fantasy adult debut, Ninth House. The Shadow and Bone and Six of Crows series have been adapted into Shadow and Bone by Netflix, and Ninth House will be adapted by Amazon Studios; Bardugo is an executive producer on both works.