F. Paul Wilson is the New York Times bestselling author of horror, adventure, medical thrillers, science fiction, and virtually everything in between. His books include the Repairman Jack novels--including Ground Zero, The Tomb, and Fatal Error--the Adversary cycle--including The Keep--and a young adult series featuring the teenage Jack. Wilson has won the Prometheus Award, the Bram Stoker Award, the Inkpot Award from the San Diego ComiCon, and the Lifetime Achievement Award of the Horror Writers of America, among other honors. He lives in Wall, New Jersey.

Gemma Files is the author of over 100 short stories, five collections of short fiction and five novels, all horror or dark fantasy. She won the 1999 International Horror Guild Best Short Fiction Award for her story The Emperor's Old Bones, the 2010 Black Quill Award for Best First Novel for A Book of Tongues (first in the Hexslinger series), and the 2015 Shirley Jackson Award for Best Novel for her book Experimental Film.

Michael Bailey is the Senior Country Advisor for the mPowering Frontline Health Workers Partnership. He has worked in the development and management of software applications for distance education and decision-making support for over 15 years. While with Johns Hopkins Bloomberg
School of Public Health Center for Communication Programs, he designed and developed training systems for strategic health communication and leadership in many countries, a primary medical training system in Egypt for pharmacists, the national decision-support system for the Government
of Jordan and has supported the adaptation and deployment of mobile-based distance learning program for midwives in Nigeria and frontline health workers in India and Pakistan.