K. D. Martel

K. D. Martel writes science-fiction romance centered on Atlantean history, alien contact, and the people entrusted with powerful living crystals. Guardians of the Crystals names the three-book sequence comprising The Osirion Connection, Herculobus, and Amun-Ra. The series begins after a catastrophic flood, when surviving Atlanteans and their descendants carry a genetic marker that enables a symbiotic exchange with crystal entities. Its later volumes widen the conflict through planetary danger and the continuing responsibilities of the Guardians. Bibliographic records date the sequence from 2014 through 2018 and classify it across science fiction, action adventure, fantasy, and romance. Martel uses the recurring crystal mythology to connect otherwise expanding settings and generations of characters. Guardians of the Crystals is therefore best understood as the umbrella identity for a complete speculative trilogy rather than a single unrelated episode, guiding readers toward the ordered progression from The Osirion Connection to Herculobus and finally Amun-Ra.