After the Chief of the Secret Intelligence Service is assassinated, a terrorist organization plans to unleash a weapon of apocalyptic proportions and bring the British government to its knees.

A deniable team is assembled to hunt down the terrorists. Called back from obscurity to lead them is Jack “Gorilla” Grant: a freelancer with a Smith & Wesson’ 39 and cut-throat razor. And he's ready to settle the score in his own, brutal fashion.

The Sentinel Five team turns their gunsights to the East, and enters a killing ground of death.

Praise:

★★★★★ - "An action-packed book with a unique storyline and well-developed characters."

★★★★★ - "If you like spy thrillers with a gritty edge and a solid bit of realism tossed in, Sentinel Five is an excellent place to start."

★★★★★ - "Jason Bourne meets Ocean's Eleven."

★★★★★ - "James Quinn is now my new best author. His characters are all three dimensional and believable, the plot logical, yet with brilliant twists and turns."

★★★★★ - "Great read! I am now officially a Gorilla Grant fan."