Book Review: Sentinel by Mark Greaney

Joshua Duffy, the hero of Armored, is back, and he can’t stop being a chaos magnet. Everywhere he goes, trouble follows. When his wife, Nikki, gets a diplomatic security assignment in the stable country of Ghana to help coordinate the construction of a dam, Josh joins her, and their two kids come as well so they can work and have quality family time. But someone from Josh’s past is working with Chinese operatives, and they want nothing more than to destabilize the country, no matter how many die in the process.

Greaney slowly builds the story, and the novel’s first section recounts a past event with Josh and then family life before Nikki’s assignment. Even during a simple mission protecting a client becomes a crisis. Thankfully, Josh is there to save the day. Once they arrive in Ghana, and a diplomatic meeting requiring security near the dam is infiltrated by the team of mercenaries from Sentinel Security Inc., the intensity never lets up for a second. 

Sentinel is more than just a mere shoot-em-up. The human side of the equation elevates this to more than just a page-turner. Readers will care about Josh, Nikki, and their family. Mark Greaney now has the problem of managing two terrific series simultaneously, and readers will want more of each one immediately.