As of my knowledge cutoff date in 2023, N. J. Adel is an author known for writing contemporary and dark romance novels. Her work often includes elements of suspense, intrigue, and at times, touches of the paranormal. She has written series such as "The Callaghan Green Series" and standalone novels that explore complex characters and steamy, emotional storylines. Adel's writing is typically characterized by strong female protagonists and compelling romantic connections. Because author biographies can change and more work may have been published or details may have emerged since my knowledge cutoff, it's always good to look up any author's most recent biography or website for the latest information.