Memoirs of an Assassin

A chilling glimpse into the mind of a professional killer.

Hunting Grounds

In this unflinching fictional memoir, an unnamed contract assassin breaks his silence to reveal the methodical world of sanctioned murder. Operating in the shadows across Europe, Asia, and beyond, he has eliminated over twenty targets with surgical precision—each death carefully planned, expertly executed, and perfectly concealed.

What emerges is not the glamorous assassin of popular fiction, but something far more unsettling: an ordinary man who has made killing his profession. From his accidental recruitment to his evolution into a disciplined predator, he details the tradecraft of death—the surveillance techniques, the weapons of choice, the psychological compartmentalization required to function in a world where human life is reduced to a contract price.

Written with stark honesty and clinical detachment, this dark thriller explores the banality of evil and the razor-thin line between civilization and savagery. As global surveillance tightens and his latest assignment threatens to be his most dangerous yet, he must confront the ultimate question: in a world that creates monsters, what separates the professional from the psychopath?

Part psychological study, part procedural thriller, Memoirs of an Assassin is a disturbing meditation on morality, isolation, and the true cost of crossing lines that can never be uncrossed. A haunting exploration of what it means to be human when your humanity is your greatest liability.

Memoirs of an Assassin

USD $9.99

First published: 30 September 2025

ISBN: 978-981-94-4455-7 (PDF version)

Pages: 160

Or get both books in a bundle

Memoirs of an Assassin + The Russia Assignment in one bundle.

Or purchase for Amazon Kindle

What readers are saying

"Memoirs of an Assassin unfolds as an intimate conversation with its main character, immediately drawing you in, and once you’re there, it doesn’t let you go. The writing is simple and authentic, walking that fine line between dark and humorous in a way those “in the know” will especially appreciate. I couldn’t put it down."

"As a matter of practice, I steer clear of assassin stories, but this one surprised me. Instead of leaning on nonstop violence or over-the-top suspense, it spends its time on the thinking behind the work — the psychology, the planning, the trade-offs, and the quiet risks that sit beneath each action. The writing is clean and matter-of-fact throughout. By the final chapter, the pace picks up noticeably in a way that feels like a clear setup for an interesting series. It left me curious about where the story goes next. I’ll be keeping an eye out for the author’s next book."

"Memoirs of an Assassin is an authentic thriller that stands out for its location set pieces and masterful tension. Grant Rayner’s background in the military and the security industry lends the tradecraft a sense of realism, making this a must-read! Whilst I'm fairly sure Grant is not an international assassin he certainly could be!"

Ready for the sequel?

The Russia Assignment

He is a professional. He is alone. He is in Russia.

Read more →

Want to follow the assassin on more assignments?

Standalone short stories that provide glimpses into the assassin's world — scenes, memories, and moments that live alongside the novels.

Read Short Stories →