Author Don Bentley has written lots of books, including his own Matt Drake series, continuing the Tom Clancy legacy, and now doing the same for Vince Flynn's legendary Mitch Rapp character. Don's latest, "Denied Access", is a prequel, taking fans back to Mitch Rapp in his 20s. It's at least a much an old-school espionage thriller as a high-octane action thriller (unlike Don's prior Mitch Rapp novel), with an intense and complex plot reminiscent of John le Carre and such folks. I think you'll very much enjoy "Denied Access" no matter how many (or how few) other Mitch Rapp novels you've read, and of course Vince Flynn didn't write the Rapp story beginning at Rapp's beginning either...
Denied Access: A Mitch Rapp Novel by Don Bentley
BEHIND THE REVIEW: Don Bentley's Latest Mitch Rapp Novel, 'Denied Access'