Relentless - Mark Greaney


By Mark Greaney

  • Release Date: 2021-02-16
  • Genre: Mysteries & Thrillers
Score: 4.5
From 2,880 Ratings


The Gray Man's search for missing intelligence agents plunges him deep into a maelstrom of trouble in the latest entry in the #1 New York Times bestselling series.

The first agent disappearance was a puzzle.

The second was a mystery.

The third was a conspiracy.

Intelligence operatives around the world are disappearing. When a missing American agent re-appears in Venezuela, Court Gentry, the Gray Man, is dispatched to bring him in, but a team of assassins has other ideas. Court escapes with his life and a vital piece of intelligence.

Meanwhile, CIA agent Zoya Zakharova is in Berlin. Her mission: to infiltrate a private intelligence firm with some alarming connections. The closer she gets to answers, the less likely she is to get out alive.

Court and Zoya are just two pieces on this international chessboard, and they're about to discover one undeniable truth—sometimes capturing a king requires sacrificing some pawns.


  • Great Read

    By kmeyer430
    As usual the grey man books are hard to stop reading.
  • Good read

    By packer174
    Action packed and very suspenseful worth the read
  • The Best!

    By Curvedoc
    I’ve read every book in this great series and, although I’ve enjoyed them all, this one is the best so far. Looking forward to the next one!
  • Well Titled

    By pw!642
    Wow, this book wore me out, finally I can get some sleep!
  • RELENTLESS!- 🤩 Wow- super read.

    By JC Cincy Kid
    I’ve read all the Grey Man books and this is definitely in the top (3). This author absolutely maintains a very high level of exciting and entertaining reading that is remarkably consistent. I can’t wait for the next installment in the “Grey Man” series. Outstanding fun read- (5) PLUS STARS all the way! 🌟 Cincy Kid 68! 👊
  • Move over Jack Reacher

    By Auburn 80
    If you enjoy Jack Reacher’s intelligence and brute strength, you will revel in Gray Man’s cunning and endurance. The writing is vivid, intense and focused. The plots are tight and relevant in today’s world. Gray Man is the agent you wish were out there, but hope he’s not after you.
  • Outstanding, AGAIN!!

    By Beastmode 29754
    Never ceases from the entertainment!! So GOOD!!
  • I want the next one…

    By Ptvogelzang
    I want more! Can’t wait until the next Grey Man book is released! Really excellent.
  • Relentless

    By StrenghAndHonor
    Super good book!!!
  • Avid reader Tony.

    By Tony w. W. W.
    Very interesting plot! Slow in a couple of places but we’ll written!