The Summoner (The Dominic Grey Series)

When a United States diplomat disappears in front of hundreds of onlookers while attending a religious ceremony in the bushveld of Zimbabwe, Dominic Grey, Diplomatic Security special agent, product of a violent childhood and a worn passport, is assigned to investigate. Aiding the investigation is Professor Viktor Radek, religious phenomenologist and expert on cults, and Nya Mashumba, the local government liaison.

What Grey uncovers is a terrifying cult older than Western civilization, the harsh underbelly of a country in despair, a priest seemingly able to perform impossibilities, and the identity of the newest target.

Himself...