Robin Lorraine LaFevers is an American children's book writer from California. She is widely recognized for her captivating series aimed at children and young adults. Among her notable works are the Theodosia series, illustrated by Yoko Tanaka, and the Nathaniel Fludd, Beastologist series, illustrated by Kelly Murphy, which cater to a younger audience. For young adults, she has created the enthralling His Fair Assassin series.

Robin's journey into the world of young adult fiction reached new heights with the His Fair Assassin trilogy—GRAVE MERCY, DARK TRIUMPH, and MORTAL HEART, followed by the companion duology COURTING DARKNESS and IGNITING DARKNESS, which have been met with critical acclaim and numerous accolades. Her works have received multiple starred reviews and have been selected as best books of the year by renowned publications such as Booklist, Publishers Weekly, and Kirkus Reviews. Additionally, they have been nominated for the Mythopoeic Fantasy Award for Children's Literature.

Writing under the pseudonym R.L. LaFevers, Robin has also penned the THEODOSIA and NATHANIEL FLUDD, BEASTOLOGIST series, further showcasing her versatility and ability to enchant readers across different age groups. Despite her vivid imagination and the adventurous worlds she creates, Robin humorously notes that she has neither trained as an assassin nor joined a convent, but her lifelong quest for answers to life's mysteries often finds solace in the realm of books.