Sierra Six a Gray Man novel by Mark Greaney

Sierra Six is the eleventh novel in the Gray Man series by Mark Greaney. It follows the story of Court Gentry, a former CIA assassin who is now a freelance operative. Gentry is on the run from the CIA after he is framed for a murder he did not commit. He must use all of his skills and resources to clear his name and stay alive. 

The novel is set in the aftermath of the events of the previous novel, Dead Eye. Gentry is still recovering from the injuries he sustained in that novel, and he is also dealing with the emotional fallout of killing his former mentor. He is also haunted by the ghost of the terrorist leader he killed in his first mission as Sierra Six.

Gentry is forced to go on the run when he is framed for the murder of a CIA agent. He is pursued by the CIA, as well as by a group of Russian assassins. Gentry must use all of his skills and resources to stay alive and clear his name. 

The novel is full of action and suspense, and it features some of the most intense and exciting scenes in the Gray Man series. Greaney does a great job of keeping the reader on the edge of their seat, and he also explores some of the darker themes of the series, such as the cost of violence and the nature of loyalty.

Sierra Six is a must-read for fans of the Gray Man series. It is a fast-paced, action-packed thriller that will keep you entertained from beginning to end.

Here are some of the key features of Sierra Six:

The eleventh novel in the Gray Man series

A fast-paced, action-packed thriller
Full of suspense and twists
Explores the darker themes of the series
A must-read for fans of the Gray Man series