Publisher: Sphere (Trade Paperback – 25 June 2024)

Series: Josh Duffy – Book Two

Length: 475 pages

My Rating: 4.5 out of 5 stars

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In the mood for some awesome thriller action?  Look no further than the latest novel from the always impressive Mark Greaney, Sentinel.

Thriller author Mark Greaney has been on a real roll lately.  Not only does he continue to impress with his iconic Gray Man spy thriller series, but he just released a second book in his Josh Duffy series, with Sentinel.  Readers of this blog will know that I am a big fan of Greaney, having had an exceptional time with his Gray Man novels, including The Gray Man, Mission Critical, One Minute Out, Relentless, Seirra Six, Burner and The Chaos Agent.  I was also very excited to receive a copy of Sentinel, especially after having really enjoyed the first Josh Duffy novel, Armored.  Following a former military contractor who finds himself caught up in dangerous escort missions in foreign countries, the Josh Duffy books are a lot of fun, and I had an amazing time with the intense and action-packed Armored, which saw all hell break loose in Mexico.  Sentinel is a very worthy sequel to Armored, as the protagonist and his family, find themselves caught up in a deadly coup.

After a lifetime of military contract work, Josh Duffy has found more stable employment as part of the Bureau of Diplomatic Security, protecting diplomats and ambassadors in Washington.  When his State Department wife, Nikki, is transferred to Ghana, Josh and their two children join them, hoping to start up a new life in the stable African nation.  However, things are about to get explosive as a group of Chinese spies have begun to implement an elaborate scheme to overthrow the Ghanaian government and replace it with one less friendly to the West.

Unaware of these machinations, both Josh and Nicole find themselves accompanying a group of American, European and Ghanian politicians and officials to an important dam as part of a vital diplomatic mission.  However, their simple photo-op quickly turns into a deadly firefight as the officials and their bodyguards find themselves under unexpected attack from a large army of rebels and their Chinese hired mercenary minders.

Cut off from help and with the rest of the country in chaos thanks to the Chinese led coup, Josh finds himself fighting to save both himself and his protectees from the forces arrayed against them.  Forced on the run, Josh attempts to lead everyone to safety and work out who is responsible for the destruction going on around them.  But when an old enemy from his past reappears, Josh finds himself forced to choose between his mission and his family.

This was a fantastic and very exciting new novel from Greaney, that provides readers with a particularly awesome experience.  Loaded with excellent and realistic action, Sentinel is an amazing book to get through, and I loved how intense it turned out to be.

The plot of Sentinel proved pretty damn impressive, as the author serves up an exciting, action-packed thrill ride.  I have always appreciated Greaney’s ability to create complex scenarios to set his thrillers around, and Sentinel was a particularly good example of this, with an engineered coup in Ghana serving as the basis for the plot.  The author does an excellent job setting the scene for this coup right at the start of Sentinel before transitioning the reader across to protagonist Josh Duffy and his family.  Much of the first half of the book is split between the Duffys getting used to their roles in Ghana, and the antagonists moving the pieces around to finally initiate the plan, and readers come away very invested in both, while waiting for the inevitable carnage.

Once the antagonists begin to put their plans in motion, Sentinel turns into a particularly intense read.  The action flies thick and fast around the protagonists, as all-out war descends on them and they are forced to fight for their survival.  Greaney loads the centre of Sentinel with a continuous string of firefights and high-energy action set pieces, and the reader is left constantly on the edge of their seat as they watch the carnage unfold.  The plans of the antagonists are constantly changing thanks to the actions of Duffy and others, and I loved how frenetic and complex the narrative got.  At the same time, Duffy comes across an old adversary who begins to make the fight personal, and the protagonists soon find themselves targeted by everyone involved in the conspiracy.  All the action leads up to a big final confrontation, as the protagonists are predictably forced to try and save their family.  This leads to an additional great fight sequence, and the reader comes away sated from all the action and fights, as well as satisfied with the comeuppance to the antagonists.  While part of a larger series, Sentinel’s narrative ensures that this is a fantastic standalone novel, and you can have so much fun with this excellent read.

As with all Greaney’s books, Sentinel was a clever and well-crafted thriller novel that has an excellent flow to it.  Serving as a sequel to the first book but standing on its own merits, Sentinel is highly action-orientated, perhaps more so than the author’s Gray Man books.  As a result, there are a ton of high-octane battle sequences and firefights, as the protagonists constantly find themselves fighting for their lives.  These scenes are extremely well written, and Greaney has a real talent for showcasing multi-layered fight sequences featuring multiple figures.  A lot of this is down to the way in which Greaney effectively shifts the perspective between the various combatants, both protagonist and antagonist, so the reader gets a great view of all sides of the battle.  The author also does an effective job setting up a compelling and intriguing narrative frame for this action in early pages of the book, and you really get drawn into the complex narrative that has some interesting political and social takes on the country of Ghana.  The excellent use of perspective changes helps to really highlight the complexity of the antagonist’s schemes, and it proved fascinating to see their plans in constant motion, especially when impacted by the actions of the protagonist.  As such, readers really get drawn into the elaborate plot of Sentinel and are treated to a ton of awesome action sequences guaranteed to get the blood flowing.

Sentinel also features a bevy of great characters, including scheming foreign agents, deadly mercenaries, and all manner of good guys.  Greaney as always does an excellent job of splitting the plot between multiple perspective characters, and the reader is given a good sense of each of these figures, as well as the role they play in the larger plot.  Naturally most of the focus goes to returning protagonists, Josh Duffy and his wife Nikki, who are constantly at the centre of the action.  Due to this being the second book in the series, Greaney focuses less on these two characters’ backstories, and instead examines the current state of their family, and their attempts to forge a new life working together.  While Josh is generally the main character, Nikki serves as a good supporting figure him, and they prove to be a fun husband and wife duo, especially when their family is in danger.

Other characters of note include Ghanian elite police officer, Isaac Opoku, who finds himself caught up in the major assassination plot impacting the Duffys.  Isaac is an excellent and likeable supporting protagonist who provides some local insights into events, and whose impromptu team up with Josh proves to be quite entertaining.  I also loved the inclusion of South African mercenary Conrad Tremaine, who serves as the book’s primary antagonist.  A maniac working to ensure the larger plan goes off, Tremaine serves as a great foil to Josh, especially as the two have a contentious history.  The various interactions between the two are a ton of fun, and I liked how Greaney set up and then utilised this fantastic villain.

Sentinel by Mark Greaney was an outstanding and deeply exciting action thriller which is guaranteed to keep your attention.  Featuring some fantastic fight sequences and a compelling plot, Sentinel was another impressive book from Greaney, and one I had a hard time putting down.  An excellent sequel to Armored, Sentinel comes highly recommended, and I hope that Greaney continues this series in the future.

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