James S.A. Corey is the pen name used by collaborators [Daniel Abraham][1] and [Ty Franck][2]. The first and last name are taken from Abraham's and Franck's middle names, respectively, and S.A. are the initials of Abraham's daughter. [1]: https://openlibrary.org/authors/OL1427729A [2]: https://openlibrary.org/authors/OL7523472A