In Dublin, Ireland, academics and historians are dying. An unidentified venom is to blame. Strange markings from deep in the Emerald Isle's past suggest adherents to lost and forbidden knowledge may have reorganized. Detective Aileen O'Donnell of Ireland's National Police Service, An Garda Síochána, has never heard of the agency's sub rosa unit devoted to investigation of the strange and paranormal. That is, until a shooting incident leads to her suspension from the Special Detective Unit. While awaiting disciplinary proceedings, she's pressed into service by the secret division to investigate the deaths and what might be the tip of a conspiracy and academic cover-up.Soon O'Donnell's teamed with Geoffrey Bullfinch and Wendell "Mack" Macklemore of O.C.L.T. On a race through medieval ruins and holy sites, she must collect puzzle pieces, fragments from a forgotten pulp writer and bits of secret Druid history to stop the shadowy band of disciples before it awakens something long sleeping beneath one of Ireland's most famous landmarks, something modern technology and firepower can't defeat. This novel, which stands alone, is a tie-in with the ongoing O.C.L.T. series.There are incidents and emergencies in the world that defy logical explanation, events that could be defined as supernatural, extraterrestrial, or simply otherworldly. Standard laws do not allow for such instances, nor are most officials or authorities trained to handle them. In recognition of these facts, one organization has been created that can. Assembled by a loose international coalition, their mission is to deal with these situations using diplomacy, guile, force, and strategy as necessary. They shield the rest of the world from their own actions, and clean up the messes left in their wake. They are our protection, our guide, our sword, and our voice, all rolled into one. They are O.C.L.T.Other books in the O.C.L.T. series include the novella "Brought to Light," By Aaron Rosenberg, the novel "The Parting," by David Niall Wilson, the novella "The Temple of Camazotz," also by David Niall Wilson, and the novel "Incursion," by Aaron Rosenberg (in which the existence of the O.C.L.T. as a cohesive unit is finalized). Another stand-alone adventure can be found - "The Noose Club," by David Bischoff.Cover art on Disciples of the Serpent comes from Bob Eggleton.