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John McMahon

Critically-acclaimed author of the P.T. Marsh Series

• Finalist for EDGAR AWARD (Best First Novel)

• Finalist for THRILLER AWARD (Best First Novel)

• NY Times Top 10 Crime Novels of Year
   (for THE GOOD DETECTIVE & THE EVIL MEN DO)

• Amazon Editor's Pick (Best Mystery): A GOOD KILL

Author of the forthcoming HEAD CASES series

• Coming 1/25 to bookstores. Optioned for a show on
   HBO Max

Coming Soon!

Head Cases

FBI Agent Gardner Camden is an analytical genius with an affinity for puzzles. He also has a blind spot on the human side of investigations, a blindness that sometimes even includes people in his own life, like his beloved seven-year-old daughter Camila. Gardner and his squad of brilliant yet quirky agents make up the Patterns and Recognition (PAR) unit, the FBI’s hidden edge, brought in for cases that no one else can solve.

 
When DNA links a murder victim to a serial killer long presumed dead, the team springs into action. A second victim establishes a pattern, and the murderer begins leaving a trail of clues and riddles especially for Gardner. And while the PAR team is usually relegated to working cold cases from behind a desk, this investigation puts them on the road and into the public eye, following in the footsteps of a killer.

 

Along with Gardner, PAR consists of a mathematician, a weapons expert, a computer analyst, and their leader, a career agent. Each of them must use every skill they have to solve the riddle of the killer’s identity. But with the perpetrator somehow learning more and more about the team at PAR, can they protect themselves and their families… before it’s too late?
 

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Order Now

Matthew Quirk, New York Times best-selling author

Praise for the forthcoming
"HEAD CASES"

"A masterfully-done game of cat
and mouse with an unforgettable
cast of characters."

"Grabbed me from page one!"

J.A. Jance, 

"Gripping, twisty, and atmospheric."

Karen Dionne,
Best-selling author of 
The Marsh King's Daughter

Appearances

News & Appearances

NEWS:

John McMahon's HEAD CASES, about a team of lovable puzzle-solving oddballs at the FBI known as PAR (Patterns & Recognition) sold to Kelley Ragland at Minotaur in a good deal, by Simon Lipskar at Writer's House.

APPEARANCES:

None currently. Will be announced here with Links.

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About John McMahon

John McMahon is the author of A Good Kill, The Evil Men Do, and The Good Detective, which was a finalist for both the Edgar Award and the Thriller Award for best first novel.

His first two novels were each named “Top Ten Crime Novels” of the year by The New York Times Book Review. He lives in Southern California with his family and two rescue animals. 

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