Mark Greaney

markgreaneybooks.com

Mark Greaney is the author of the Gray Man series, including The Chaos Agent.
He holds a degree in International Relations and Political Science, which informs his writing.
Greaney's commitment to authenticity is evident in his extensive research, having traveled to ten countries and trained in firearms, battlefield medicine, and close-range combat tactics.
This hands-on approach contributes to the realism in his novels.
Greaney's work has garnered a dedicated fan base, with readers praising his storytelling abilities and character development.
He actively engages with his audience through his website and email, fostering a connection with his readers.

Books by Mark Greaney

The Gray Man

by Mark Greaney • 2009

Betrayed mid-flight, an elite assassin must fight across Europe to save his handler's family.

4.16

51k+

🕵️ Spy Thriller 💪 One Man Army 🐱 Cat And Mouse

The Gray Man

Betrayed mid-flight, an elite assassin must fight across Europe to save his handler's family.

by Mark Greaney 2009 456 pages

4.16

51k+ ratings

🕵️ Spy Thriller 💪 One Man Army 🐱 Cat And Mouse

On Target

by Mark Greaney • 2010

Stranded in Darfur, a rogue assassin must protect an ICC investigator and evade a manhunt.

4.20

30k+

🕵️ Rogue Operative 🔫 Covert Ops 🤝 Reluctant Allies

On Target

Stranded in Darfur, a rogue assassin must protect an ICC investigator and evade a manhunt.

by Mark Greaney 2010 534 pages

4.20

30k+ ratings

🕵️ Rogue Operative 🔫 Covert Ops 🤝 Reluctant Allies

Ballistic

by Mark Greaney • 2011

A hunted CIA operative takes on a Mexican drug cartel to save his dead friend's family.

4.32

25k+

🏴‍☠️ Cartel Thriller 🎯 Tactical Action 🕶️ Rogue Agent

Ballistic

A hunted CIA operative takes on a Mexican drug cartel to save his dead friend's family.

by Mark Greaney 2011 467 pages

4.32

25k+ ratings

🏴‍☠️ Cartel Thriller 🎯 Tactical Action 🕶️ Rogue Agent

Dead Eye

by Mark Greaney • 2013

After killing a Russian mobster, a rogue spy becomes the hunted, pursued by a sociopathic rival.

4.42

22k+

🎯 Assassin Vs Assassin 🕵️ Rogue Operative 🏛️ Institutional Betrayal

Dead Eye

After killing a Russian mobster, a rogue spy becomes the hunted, pursued by a sociopathic rival.

by Mark Greaney 2013 479 pages

4.42

22k+ ratings

🎯 Assassin Vs Assassin 🕵️ Rogue Operative 🏛️ Institutional Betrayal

The Chaos Agent

by Mark Greaney • 2024

Hunted by drones worldwide, two operatives uncover a rogue AI weapon rewriting the rules of war.

4.46

14k+

🤖 Techno-Thriller 🕵️ Spy Thriller 💻 Rogue Ai

The Chaos Agent

Hunted by drones worldwide, two operatives uncover a rogue AI weapon rewriting the rules of war.

by Mark Greaney 2024 556 pages

4.46

14k+ ratings

🤖 Techno-Thriller 🕵️ Spy Thriller 💻 Rogue Ai

Midnight Black

by Mark Greaney • 2025

Betrayed mid-air, a covert operative fights across Europe to rescue his handler's kidnapped family.

4.62

13k+

🗡️ Assassin Protagonist 🕵️ Rogue Agent 💥 Tactical Action

Midnight Black

Betrayed mid-air, a covert operative fights across Europe to rescue his handler's kidnapped family.

by Mark Greaney 2025 518 pages

4.62

13k+ ratings

🗡️ Assassin Protagonist 🕵️ Rogue Agent 💥 Tactical Action

Armored

by Mark Greaney • 2022

An amputee contractor takes a cartel-country security gig that is his family's only lifeline.

4.36

10k+

🛡️ Private Security Ops 🎯 One Last Mission 💰 Cartel Negotiations

Armored

An amputee contractor takes a cartel-country security gig that is his family's only lifeline.

by Mark Greaney 2022 510 pages

4.36

10k+ ratings

🛡️ Private Security Ops 🎯 One Last Mission 💰 Cartel Negotiations

Sentinel

by Mark Greaney • 2024

During a coup in Ghana, a wounded veteran's children are snatched by a mercenary from his past.

4.37

5k+

🎖️ Special Ops ⚠️ Family In Jeopardy 🩹 Wounded Veteran

Sentinel

During a coup in Ghana, a wounded veteran's children are snatched by a mercenary from his past.

by Mark Greaney 2024 492 pages

4.37

5k+ ratings

🎖️ Special Ops ⚠️ Family In Jeopardy 🩹 Wounded Veteran

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