Jim Michael Hansen, also often writing as R.J. Jagger, is the author of over 25 hard-edged mystery and suspense thrillers, including the Nick Teffinger thrillers, the Bryson Wilde thrillers, and the Nicole Stone thrillers. In addition to his own books, he also ghostwrites for a well-known, bestselling author. He is a member of the International Thriller Writers as well as Mystery Writers of America.