Books

Seven years after a murder conviction, Jennifer Harmon—a woman with terminal cancer—approaches private investigator Sean O'Brien with a stunning revelation: the police convicted the wrong man. As the alibi who never came forward, Jennifer now seeks redemption before she dies. When detectives refuse to reopen the case, O'Brien takes it on, only...

When thieves steal the trawler Gypsy from a Florida marina, they don’t just take a boat—they steal the retirement dreams of an elderly couple who happen to be close friends of Sean O’Brien. Tracking the vessel beyond U.S. waters and toward the Bahamas, Sean enters a lawless world of international boat theft, corruption, and modern-day piracy.

...

A parade. A secret. A plot that could change the world.

When Sean O’Brien notices a small but troubling anomaly at a Veterans Day parade, he has no way of knowing it is the first signal of a plot so catastrophic it could alter the balance of power across the globe.

A secretive organization born in the shadows of World War II and the Nuremberg...

When rumors spread that a remote Florida spring can suspend aging, Gideon Wright becomes a marked man. With killers circling and billions at stake, he turns to investigator Sean O’Brien to protect a discovery that could change human life forever—or destroy everyone who knows it exists. O’Brien must stop those determined to steal the real...

Sean O'Brien's wedding plans are shattered when an old friend—a former Delta Force operator—arrives with devastating news: his healthy college-aged son has mysteriously died. Desperate for answers, he turns to the one man he trusts to uncover the truth.

What begins as a search for justice quickly reveals a sinister pattern linking multiple...

Former CIA cryptographer Paul Marcus is living quietly with his family in the mountains of Montana when an unscheduled visit shatters his isolation. He’s asked to decrypt seven ancient pages written more than 2,500 years ago by Sun Tzu, author of The Art of War—pages long believed lost and never meant for Western eyes.

The encrypted text may be...

Sean O'Brien stops to help a young girl retrieve money she dropped in traffic. It's a brief encounter, but her story stays with him. Days later, he sees her face again—on the evening news. She's vanished.

As the case goes cold and authorities move on, Sean can't let it go. To find her, he must descend into the dark web and infiltrate a global...

We've always believed our thoughts are the most private thing we possess. But what if that's no longer true?

When police call forensic psychology professor Elizabeth Monroe to consult on a series of baffling murders, she faces a case unlike any in her stellar career. The killers are ordinary people with no criminal history, no motive, and no...

Former college professor Walt Baker is on the verge of the find of a lifetime. More than 300 years ago, a legendary Spanish galleon sank in a hurricane off the Florida coast, carrying treasure worth an estimated ten billion dollars in today's market. Now, after years of searching, he's finally located it on the ocean floor.

But with ten billion...

WINNER - WESTERN WRITER’S OF AMERICA SPUR AWARD

Some scars come from war. Others come from going home. Both can make a man dangerous.

In the dust and heat of West Texas, Ty McGill comes home from war to find work scarce and old wounds wide open. His only chance is Midnight, a savage black stallion no one else dares touch. Gifted with his...

Michael Vargas has everything—until he walks away from it all. When the celebrated architect abandons fame and fortune, he returns to the Deep South to confront a challenge left unfinished twenty-three years earlier.

There, he rediscovers his true calling as an artist—and meets a woman who agrees to be his muse under one mysterious condition. As...

The world has always been fascinated by the myth of mermaids. But when the body of a young woman in a mermaid tail washes ashore on a Florida beach, the line between fantasy and murder dissolves.

Police dismiss it as an accident—perhaps connected to a big-budget movie filming nearby. But when a second girl, a mermaid performer at a local theme...

Father Henry McGrath hears a confession that sends a cold chill through his body. But to divulge what was said would violate sacred canon law. When he refuses to go to the police, people begin to die—and the elderly priest becomes the prime suspect.

Forensic psychology professor Elizabeth Monroe doesn't believe Father McGrath fits the killer's...

Private investigator Sean O'Brien stops near the Florida Everglades to buy flowers for a woman—a simple gesture that leads him into a deadly web of deceit, greed, and murder.

Botanist Chester Miller has devoted his life to restoring rare ghost orchids in the Everglades. But when he ventures deep into the glades and witnesses something that...

Katie Scott and her husband have restored a sailboat and set out on the trip of their dreams. But the nightmares that follow don't come from pirates or storms—they come from what her father did as a CIA officer.

Someone with a powerful vendetta is systematically assassinating retired CIA agents. And they're coming for Sean O'Brien's friend, Dave...

An encrypted letter written by Thomas Jefferson is discovered hidden in the attic of an old Virginia farmhouse. The contents could reveal who killed a U.S. Special Forces soldier—225 years after Jefferson penned the message.

Former CIA cryptographer Paul Marcus, who five years earlier cracked an encrypted paper written by Isaac Newton, is called...

The first time evil walked across the old bridge in Mississippi was 1918. When forensic psychologist Elizabeth Monroe crosses that same bridge in search of her daughter's killer, there is no turning back.

Elizabeth discovers a chilling connection between a heinous crime committed in 1918 and the recent death of a college student. Old families....

When Joe Billie stops a grave robber from desecrating a Seminole Indian burial site, he becomes the prime suspect in a bizarre murder. Facing first-degree murder charges, Joe is evasive—even with his old friend, private investigator Sean O'Brien.

O'Brien thinks he knows why Joe won't talk, but proving his friend's innocence will send him deep...

Caroline Harper still thinks of her brother Andy every day. For more than fifty years, she's carried the memory of the last time she saw him—when he left home to spend thirty days at Florida's largest reform school. Her family was told Andy ran away in the middle of the night. She never believed it.

Sean O'Brien receives a letter from a dead man....

When former CIA cryptographer Paul Marcus receives a call asking him to analyze papers locked in an old trunk, he thinks it's a hoax. But the manuscripts are real—the final writings of Isaac Newton, hidden for centuries.

Using Newton's math and notes, Marcus begins to see a pattern leading to a prophecy so terrifying that revealing it will change...