Cover of The Last Confession
Thriller ★ 4.43 · 67 Audiobook Available Exclusive

The Last Confession

by Arden Slate

  • 35 min read
  • 8 chapters
  • Published 8 January 2026
Cold CaseCover-UpDark SecretCat and MouseMissing PersonKidnappingCorruptionTicking ClockWhistleblower
Read in the FreeBooks app

About this book

Summary

A dying novelist hides a murder confession inside his bestselling serial—and every chapter matches an unsolved disappearance down to details no one should know. Detective Rachel Dunmore is pulled into a labyrinth of literary misdirection when she discovers the fiction mirrors the cold case of editor Diana Merrick, who vanished fifteen years ago near a remote lake house. Someone powerful wants the story silenced permanently, and the body count is climbing toward a final chapter Rachel may not survive.

Read a preview

Chapter 1

Chapter 1: The Anonymous Tip

The email arrived at 6:47 AM on a Tuesday, sandwiched between spam about discount pharmaceuticals and a reminder about Detective Rachel Dunmore's overdue library books. She almost deleted it.

Subject: Martin Caldwell knows what happened to Diana Merrick.

Rachel set down her coffee and read the message twice. No signature, no identifying information, just a link to a website where the famous novelist had been serializing his latest psychological thriller. The sender had highlighted specific passages, comparing them to details from a cold case file Rachel had never heard of.

She pulled up the case. Diana Merrick, thirty-four, literary editor, vanished fifteen years ago from a rental property near Hollow Lake. No body recovered. No suspects. The investigation had stalled within months and eventually went cold.

Rachel scrolled through Caldwell's online chapters, her coffee growing tepid beside her keyboard. The fictional victim was named Diane Mercer. She was thirty-four, an editor, last seen at a lake house. The descriptions of the property matched crime scene photos with unsettling precision—the weathered dock, the peculiar angle of the boathouse, even the cracked window in the upstairs bedroom.

Coincidence, Rachel told herself. Writers researched. They borrowed. They reimagined.

But then she reached the passage describing how the killer weighted the body with engine parts from a 1987 Chevrolet pickup. That detail had never been released to the public. It existed only in the original detective's notes, buried in a file that hadn't been touched in over a decade.

Rachel printed everything and walked to her captain's office.

Captain Louise Brennan had been with the department for twenty-eight years. She'd seen enough to know when something warranted attention and when it was a waste of resources. She read through Rachel's printouts without expression, her reading glasses perched on the end of her nose.

"Martin Caldwell," she said finally. "The Martin Caldwell? Wrote The Silence Between?"

Rachel nodded. Caldwell was a household name, the kind of author whose books dominated airport bookstores and spawned Netflix adaptations. He'd won awards, given TED talks, appeared on morning shows with his salt-and-pepper hair and carefully cultivated air of intellectual charm.

"Could be someone fed him the information," Brennan said. "Old cop selling stories. Wouldn't be the first time."

"I checked. Detective Morrison, the original investigator, died eight years ago. Heart attack. His partner transferred to Seattle in 2012—I've got a call in to her. But Captain, these details..." Rachel spread the pages across Brennan's desk. "The engine parts. The way the dock was positioned. The victim's habit of swimming at dawn. None of this was public."

Brennan removed her glasses and rubbed her eyes. "What do you want to do?"

"Talk to him. See how he reacts."

"He'll lawyer up."

"Maybe. But he's still releasing chapters. If he knows something, if he's involved somehow, maybe he wants to talk. Maybe that's the whole point."

Brennan was quiet for a long moment. Outside her office, the precinct hummed with its usual morning chaos—phones ringing, keyboards clacking, someone arguing about whose turn it was to make coffee.

"Go," she said finally. "But Rachel—careful. This man has money, connections, and a publicist who eats reporters for breakfast. If we're wrong, it's not just your career on the line."

Rachel gathered her papers. "And if we're right?"

"Then God help us all."

Martin Caldwell lived in a restored Victorian on the outskirts of the city, the kind of house that appeared in architectural magazines and made Rachel acutely aware of her cramped apartment with its temperamental radiator. She parked on the street and studied the property for a moment—manicured hedges, a wraparound porch, windows that gleamed in the late morning sun.

A woman answered the door before Rachel could knock. She was young, maybe late twenties, with sharp features and an expression that suggested she'd been expecting trouble.

"Detective Dunmore?" The woman's voice was clipped, professional. "I'm Celia Howard, Mr. Caldwell's assistant. He's been anticipating your visit."

Rachel kept her face neutral, though her pulse quickened. "Has he?"

"He reads the news. He knows his work has attracted attention." Celia stepped aside. "Please. He's in the study."

The interior of the house matched its exterior—tasteful, expensive, carefully curated. Books lined every available surface, not arranged for show but clearly read, their spines cracked and pages dog-eared. Rachel followed Celia down a hallway adorned with framed first editions and photographs of Caldwell with various celebrities and politicians.

The study was at the back of the house, overlooking a garden that had been allowed to grow slightly wild. Martin Caldwell sat behind an enormous oak desk, a laptop open before him, reading glasses pushed up into his graying hair. He looked exactly like his author photos—handsome in a weathered way, with deep-set eyes that seemed to absorb everything they saw.

"Detective Dunmore." He rose and extended his hand. His grip was firm, his smile practiced. "I've been wondering when someone would come."

"You've been expecting the police?"

"I've been expecting questions." He gestured to a leather chair across from his desk. "Please, sit. Celia, would you bring us some coffee?"

The assistant disappeared, and Rachel settled into the offered chair, declining to let the comfortable surroundings put her at ease. She'd interviewed killers in rooms far less pleasant than this one.

"Mr. Caldwell, I'm here about your current serialized novel. Specifically, its similarities to the disappearance of Diana Merrick in 2009."

Caldwell's expression didn't change. "Ah. Diana." He said the name like he was greeting an old friend. "I wondered if anyone would make the connection."

"You knew her?"

"She was my editor. For my first three books, actually. Brilliant woman. Exacting. She made me a better writer." He leaned back in his chair. "When she disappeared, I was devastated. We all were."

"And yet you've written a novel that appears to describe her murder in precise detail."

"Alleged murder. No body was ever found, Detective. Officially, Diana Merrick is simply missing."

Rachel pulled out her phone and read aloud: "'He wrapped the chain around her ankles three times, securing it with a padlock he'd purchased at the hardware store on Route 9. The engine block was heavy, almost too heavy, but he managed. The lake was sixty feet deep at its center. Deep enough.'" She looked up. "Would you like me to continue?"

Caldwell's smile didn't waver. "It's fiction, Detective. That's what I do. I make things up."

"The hardware store on Route 9. The depth of Hollow Lake. The engine parts from a 1987 Chevrolet. These aren't things you could have made up, Mr. Caldwell. These are details from a police file."

"Are they?" He seemed genuinely curious. "How fascinating."

Celia returned with coffee on a silver tray. Rachel ignored hers. Caldwell took a sip of his, watching her over the rim of the cup.

"Mr. Caldwell, I need to ask you directly. Did you have anything to do with Diana Merrick's disappearance?"

He set down his cup. The smile faded, replaced by something harder to read—not guilt, exactly, but not innocence either. Something in between.

"Everything in my book is true," he said quietly. "Every detail. Every moment."

Rachel's heart hammered. "Are you confessing to murder?"

"I'm confessing to nothing." The smile returned, but it was different now—sadder, perhaps. "I'm simply telling you that what I've written is the truth. Whether that truth comes from memory or imagination, well..." He spread his hands. "That's for you to determine, isn't it?"

"That's not an answer."

"It's the only answer I have." He picked up his coffee again. "I assume you'll want to search the house. I'll have my lawyer present, of course, but I won't object. You won't find anything."

"How can you be so sure?"

"Because, Detective, I'm not the one who killed Diana Merrick." He met her eyes, and for a moment, Rachel saw something flicker there—fear, maybe, or regret. "But I know who did."

Before she could respond, his phone buzzed. He glanced at it, and his expression shifted.

"New chapter's going up tonight," he said, almost to himself. "You might want to read it."

"Mr. Caldwell—"

"I think we're done for today, Detective." He rose, suddenly formal. "Celia will show you out. I'm sure we'll speak again soon."

Rachel stood her ground. "If you know who killed Diana Merrick, you have an obligation to tell me."

"Do I?" He moved toward the window, his back to her. "I've spent fifteen years carrying this weight, Detective. Fifteen years of silence. Now I'm finally speaking—just not in the way you'd prefer." He turned to face her. "Read the book. All of it. And then, maybe, you'll understand."

Celia appeared in the doorway, her expression making clear that the interview was over. Rachel gathered her things, her mind racing.

At the door, she paused. "Mr. Caldwell. If more people get hurt because you're playing games—"

"Games?" For the first time, his composure cracked. "You think this is a game to me? I've lived with this for fifteen years. Every day. Every night. Diana deserved better than silence. She deserved the truth." His voice dropped. "And so does everyone else."

Rachel left the Victorian house with more questions than answers. As she walked to her car, her phone buzzed with a notification: Martin Caldwell had just posted Chapter Seven of his serialized novel.

She sat in her car and began to read.

From readers

Reviews

Cinderella
★★★☆☆

Not quite what i was after.

Take the story with you

Read anywhere with FreeBooks

Keep reading on your phone and discover thousands more books in the FreeBooks app.

Open this book in the app