Ordinary family.Dangerousdesert.

The Martin Dougherty Series is four mystery-thrillers set in Tucson and the Sonoran Desert, where a widowed father and his grown children keep landing in the middle of other people's deadly business.

The books

Read the series in order for the full family story, or pick up any book on its own. Every title is on Amazon, and signed copies ship direct from me at a discount.

The Martin Dougherty Series

All books on Amazon
A Martin Dougherty NovelThe RingDirk Dieters
The Ring cover
Book 1

The Ring

A fresh start in Tucson. A ring that was never supposed to be found.

On moving day, Martin Dougherty's wife is killed in an accident, and the life he planned is gone in an instant. Martin and his three children, Kristi, Kim and Ken, try to rebuild in a new city. Then a discovery pulls them into murder, a presidential bid and extortion by domestic terrorists.

From Denver to Tucson, a small town in South Carolina and the backrooms of Washington, the Doughertys have one way out: protect the teenage girl caught in the middle, or none of them survive.

A Martin Dougherty NovelSuspicionDirk Dieters
Suspicion cover
Book 2

Suspicion

A Sunday bank robbery. A secret buried since 1904.

Three years after The Ring, the Doughertys have finally found their footing in Tucson. Then a violent robbery leaves bodies in a bank vault, and the trail leads back to southern Arizona's controversial orphan adoptions of 1904.

Domestic terrorists, corrupt local politicians, kidnapping and blackmail drive wedges between people who trusted each other. In this book, almost no one is who they seem.

A Martin Dougherty NovelPowerDirk Dieters
Power cover
Book 3

Power

Four billionaires want to own an election. They need one man to do it.

Widower Martin and widow Teri Wilson are still working out what they are to each other when a secret cabal known only as The Four moves to sabotage the next election. Their weapon is a restless young O'odham man who ignores his shaman grandfather's warnings about the 1871 Camp Grant massacre.

A mass shooting, a bitter fight over gun laws and the return of a familiar killer bring danger back to Tony's Coffee and the desert landmarks readers know.

A Martin Dougherty NovelSecretsDirk Dieters
Secrets cover
Book 4

Secrets

A morning hike. A body. A woman who won't let go.

Martin and Teri set out on an easy desert hike and stumble onto a body. The investigation spreads in every direction, fueled by a woman whose fixation on Martin turns dangerous.

Longtime readers will find the family they know, plus new characters who will matter in the next book. I think this one is my best yet.

Coming next: Betrayal, Book 5 in the series.

For small business owners

The Six Responsibilities of the Small Business OwnerMinding My Own BusinessDirk Dieters
Minding My Own Business cover

Minding My Own Business

A plain-spoken guide to running a business that works.

After three decades of consulting and more than 4,000 small business owners, I wrote down what the successful ones do differently. The book lays out the six responsibilities every owner carries and how to handle each without burning out.

It's also the foundation of the Minding My Own Business Workshops, which I've taught in eleven states.

Workshop WorkbookRun Your Business on Four Meetings Per WeekDirk Dieters
Run Your Business on Four Meetings Per Week cover

Run Your Business on Four Meetings Per Week

The workbook for the Run Your Business on Four Meetings Per Week workshops.

Every business does three things: gets the work in, gets the work out, and keeps track of it. This workbook gives owners the tools to manage all three through four focused weekly meetings: financial, operations, sales and strategic.

Use it alongside the workshop or on your own. It includes the reports to bring, the numbers every owner must know, and the meeting discipline that keeps each one under 45 minutes.

Come find me at the Tucson Festival of Books

I exhibit at the Tucson Festival of Books, one of the largest book festivals in the country. Stop by the booth to talk about the series, get books signed in person, and hear what's coming in Betrayal. Admission is free.

March 13–14, 2027University of Arizona Mall, Tucson. Booth location will be posted here before the festival.

Signed copies, direct from me

Every book is signed, and I'm glad to personalize it. Ordering here instead of Amazon gets you three deals that stack.

10% offevery order placed through this website
4th book freefor every four books in your order
Free shippingon every order, no minimum
The Ring
Suspicion
Power
Secrets
Minding My Own Business
Run Your Business on Four Meetings Per Week

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DDDirk Dieters

About Dirk

Dirk Dieters lives in Tucson, Arizona, where he runs The Fremont Group, a small business management consulting firm. His years as a consultant, his law degree and his time as a coach all find their way into his fiction. He's a family man, a father and a grandfather, an avid golfer, and a lifelong Michigan State football and basketball fan.

His business books, Minding My Own Business and Run Your Business on Four Meetings Per Week, came out of his consulting work. The Ring launched the Martin Dougherty Series, followed by Suspicion, Power and Secrets. Book 5, Betrayal, is on the way.

I started writing because I wanted to see if I could do it. When I got some encouragement on the first draft, I kept going, and I found out it's just plain fun.

The idea behind the series is simple: take an ordinary family and let events happen around them. I didn't want another lawyer book. Martin is a normal guy caught up in things bigger than he is, and I build each story around real history and timely events, especially from southern Arizona. I'm a big fan of C.J. Box, Stephen White and other mystery writers, and their influence shows.

My first book was all plot. By the third, the characters had taken over, and in Secrets I brought in new faces who will matter a great deal in Betrayal. I really hope you enjoy the ride.

dirk.dieters@gmail.com

Read the opening pages

Try the first pages of each novel before you buy.

The Ring

Martin Dougherty lay in bed awakened by the wind howling outside. But now it was only 3 a.m. and still in bed he listened to the wind that woke him. It was coming in gusts, some stronger than others but all enough to merit recognition. Half awake, it was as if he had moved to another world. No point in getting up. No way was he going out to the patio in this! Repeated wooden crashes from the gate outside slamming open and shut; the syncopated calling from the swaying trees that warned of the strength of the approaching gusts; and the occasional slapping of branches against windows and walls.

The swaying trees were telling him that this world would not tolerate the comforts of his previous world, and that life would never again be the same. No, the wind would remind him that the status quo had been shaken and that the world would never again be easy. No rain, just fierce noise and the threat of the unknown. The wind carried with it the unknown and the foreshadowing of change.

Wind is felt; wind is heard; and wind is experienced. Martin lay in bed feeling the intensity, listening to the sounds and experiencing the mystical yet angry wind, trying to interpret the meaning. The inner shaman in Martin failed to provide solace in his interpretation. What was yet to come was unknown, but he knew that it would continue to include memories of what was past. Memories that alternated from precious to heartbreaking and foreshadowing a future that remained terrifying.

Oh how he wished that Karen was there in bed beside him! He wanted to turn to her and see if the wind had awakened her. He wanted to go back to the mountains with her. She enjoyed it as much as he did, but that was not to be. No one deserved to die that young, especially her.

Keep reading The Ring

Suspicion

Lucy lay next to the elevator on the cold concrete floor of the basement level, which housed the vault, thinking, "Am I dead? No. I can feel the floor's cold, and my head and hand hurt. Why aren't I dead?" The fog in her head started to clear. "He shot Dalton! There were more shots. Oh my God, Brian! Where is Brian? I wasn't supposed to be here!"

The smell of gunfire remained. Shouts and panic flowed around her. Seconds seemed like minutes, and minutes seemed like hours. Lucy's left hand felt something sticky. Sticky and warm. Unable to resist the urge, she turned and opened her eyes to look. She gasped as she realized Dalton's blood covered her hand.

Footsteps. She heard footsteps. They got louder. Lucy could feel the vibration on her cheek. It was the gunman. He stopped. "Is he going to kill me now?" Then he continued out, leaving her on the floor. Lucy's body went limp.

Keep reading Suspicion

Power

In the Dulles Airport club room, Ray Payton sat in a comfortable club chair overlooking the tarmac as he reviewed his notes. Violent thunderstorms passing through the Washington, D.C. area had delayed his flight by at least another hour. Hours earlier, Ray had been in the comfort of a conference room in the Alexandria country estate of possibly the country's wealthiest person and a member of The Four.

This cabal of four men held more wealth and power than imaginable. The public might recognize their names, but the public would never know them by "The Four," as they were referred to by the few that ever reached this inner circle.

Ray Payton was unique. The Four trusted few people, but Ray had an essential role in their organization. He was their fixer. Ray had been in that conference room dozens of times; however, this meeting was different. As he sat and listened, Ray could hardly believe what he was hearing.

Keep reading Power