Simon W. Clark Books in Order

Haunted by a ritual that killed his childhood friend, Peter Ashton searches Europe for the origins of an occult manuscript. Its connection to hidden knowledge attracts dangerous seekers of power, forcing him to confront the temptation that once destroyed his life.

Black-ops agent Rick Jensen follows a terrorist network across the Middle East while investigating arms dealing and looted antiquities. A woman rescued from trafficking may identify its hidden leader, but stopping the organization demands surviving increasingly dangerous assignments.

NSA contractor Jake Armitage investigates a killing in St. Petersburg that threatens an international crisis. A mysterious prison tattoo, a journalist, and evidence with presidential implications lead him toward a conspiracy linking violent criminals and powerful political interests.

An assassination attempt ends Jake Armitage's time at sea and draws him back into covert work. Assignments stretching from Manila to Paris and Japan reveal terrorism and powerful organizations whose ambitions threaten far more than his own survival.

Jake Armitage pursues an advanced biological weapon through Taiwan and Belarus before hostile powers can acquire it. Rival operatives, a personal enemy, and a widening conspiracy leave him dependent on limited allies to prevent a devastating international catastrophe.