Patrick Senécal was born in Drummondville, Quebec. He taught literature and cinema for several years, and, fascinated by suspense, fantasy, and terror, began writing to popular and critical acclaim in his native Quebec. Three of his novels have been adapted for film, and three other adaptations are currently under development in Quebec. He lives in Montreal, Canada, with his wife and two children. Visit him at PatrickSenecal.net.

Andrew Pyper is the internationally bestselling author of ten previous novels, including The Demonologist, which won the International Thriller Writers award for Best Hardcover Novel, and The Killing Circle, which was selected a New York Times Best Crime Novel of the Year. He lives in Toronto. Visit AndrewPyper.com and follow him on Twitter @AndrewPyper.

Daniel Kalla is an internationally bestselling author of many novels, including Fit to Die, The Darkness in the Light, Lost Immunity, The Last High, and We All Fall Down. Kalla practices emergency medicine in Vancouver, British Columbia. Visit him at DanielKalla.com or follow him on Twitter @DanielKalla.

S. J. Maher is an award-winning journalist who has uncovered scandals, reported from remote outports, jails, warships, hospitals, parliamentary chambers, Afghanistan, and Haiti. His second novel, Salvage, was shortlisted for awards by the Crime Writers of Canada and The International Thriller Writers. He writes his books at anchor on his old sailboat, Free Spirit. Visit him at sjmaher.ca or follow him on Twitter @stphnmaher.