There are 3 books in the Charles Jenkins series. The newest book is The Silent Sisters which came out in 2022.

1
The Eighth Sister

Book cover of The Eighth Sister
An Amazon Charts, Washington Post, and Wall Street Journal bestseller.

A pulse-pounding thriller of espionage, spy games, and treachery by the New York Times bestselling author of the Tracy Crosswhite Series.

Former CIA case officer Charles Jenkins is a man at a crossroads: in his early sixties, he has a…
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3
The Silent Sisters

Book cover of The Silent Sisters
An Amazon Charts, Washington Post, and Wall Street Journal bestselling series.

In this pulse-racing thriller by the New York Times bestselling author of The Last Agent, an American sleeper cell in Russia goes silent-and it's one man's duty to find them.

After a harrowing escape from Russian agents on his…