Thirteen by Steve Cavanagh Summary: A Jury Killer Unmasked

Last Updated: September 7, 2026

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Table of Contents

Introduction

The verdict should decide who lives and who dies, but what if the killer is the one casting the vote?

In Thirteen, author Steve Cavanagh places a predator inside the one place the law considers sacred.

This fourth Eddie Flynn novel follows a defense attorney who once worked as a con artist, and it puts him against a killer with a medical condition that makes pain impossible.

The story moves through the cold, crowded courts of Manhattan. It is for readers who enjoy fast legal battles, serial killer psychology, and main characters who operate outside the standard rulebook.

Cavanagh, an Irish author and former lawyer, writes from his background in civil rights and legal practice.

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TL;DR: One Killer, Twelve Jurors, Zero Rules

A Hollywood actor faces trial for killing his wife and security chief.

The real murderer, a serial killer known for leaving dollar bills on victims, murders his way onto the jury as an alternate.

Defense lawyer Eddie Flynn uncovers staged evidence and must stop the killer before the jury reaches a verdict.

The story shifts between Flynn’s investigation and Kane’s manipulation of the trial from inside the jury room.

Story Snapshot

Element	Detail
Genre & Subgenre	Legal Thriller / Psychological Thriller
Core Narrative Tropes	The Rogue Juror, The False Accusation, The Brilliant Con Artist Attorney, The Cat-and-Mouse Game
Tone & Atmosphere	Dark, cynical, high-stakes, frantic, and winter-chilled
Primary Conflict	A defense attorney must prove a movie star’s innocence while hunting a serial killer who is manipulating the jury.
Pacing Style	Fast-paced, relentless, dual-narrative plotting.
ISBN	978-1250297624
Pages	496

Thirteen Summary: The Killer Within the Verdict

SPOILER WARNING: This section includes the full plot, including the ending.

Joshua Kane is a serial killer who cannot feel physical pain. His condition is called congenital analgesia. For years, he has committed murders along the East Coast and framed innocent people for them.

To secure guilty verdicts, he kills potential jurors, takes their identities, and sits on their juries.

In New York City, actor Robert Solomon is accused of murdering his wife, Ariella Bloom, and his head of security, Carl Tozer. Rudy Carp brings Eddie Flynn onto the defense team.

Eddie is a former con artist turned lawyer, and he is struggling with the breakup of his marriage to Christine and distance from his daughter, Amy.

Eddie meets Bobby Solomon and decides the actor is innocent.

He agrees to work the case. At the same time, Kane targets a private investigator named Wally Cook. Kane kills Wally and steals his identity to enter the jury pool.

Prosecutor Art Pryor challenges Kane from the main jury. Kane becomes the first alternate, Juror Thirteen. Kane then creates chaos to move into a voting seat. He runs over juror Brenda Kowolski.

The judge sequesters the jury at Grady’s Inn. Kane later strangles juror Manuel Ortega and stages it as a suicide. He frames juror Spencer Colbert with a fake “Guilty” note.

Eddie and his team find the physical evidence does not match the crime.

The mattress lacks blood from Ariella where Carl’s body lay. Router data shows Bobby’s iPod was active at home at midnight, but another device tried to look like his at 9:00 PM. FBI analyst Paige Delaney connects the case to a serial killer named “Dollar Bill.”

Kane kills the defense’s jury consultant, Arnold Novoselic, and frames Eddie. Corrupt detectives arrest Eddie and try to kill him. Eddie escapes with help from Harper and Judge Harry Ford. The corrupt officers die in the crash.

Eddie and Delaney realize the killer is on the jury. SWAT storms the hotel, but Kane escapes. Kane kills Art Pryor and drives to Bobby’s safe house. Eddie confronts Kane there.

A shootout follows, and Eddie shoots Kane multiple times, killing him with a shot to the head.

Eddie then exposes Bobby’s security guard, Holten, as Russell McPartland. McPartland was Kane’s accomplice. Delaney and Harper shoot McPartland before he can fire at Eddie.

The innocent men framed by Kane are cleared. Bobby Solomon is released. Eddie signs his divorce papers, but he stays committed to defending the innocent.

Summary by Chapter

SPOILER WARNING: This section briefly summarizes each chapter section for readers who want to know what is inside.

The book contains a prologue and 73 chapters, divided into five chronological sections: Monday through Friday.

Section 1: Monday (Prologue and Chapters 1 to 15)

Joshua Kane crashes into a postal van to steal court summonses and plan his infiltration. Eddie Flynn wins a drug case for a client named Jean Marie using a trick with a soda straw and a McDonald’s bag.

Rudy Carp sees Eddie’s courtroom skill and offers him a second-chair role for Bobby Solomon’s murder trial. Bobby is accused of killing his wife, Ariella Bloom, and his security chief, Carl Tozer, in his master bedroom.

Eddie first refuses because he believes Bobby is guilty, but after meeting Bobby, he changes his mind. Eddie agrees to help but keeps the option to walk away if he finds proof of guilt. Kane kills Wally Cook and takes his identity for the trial.

Wally stabs Kane during the struggle, but Kane feels nothing and cauterizes the wound with a car lighter. Judge Harry Ford tells Eddie he will preside over the trial.

Eddie reviews the prosecution’s files and finds Bobby’s fingerprints on the bat and his DNA on a folded dollar bill in Carl’s mouth. He hires Harper to investigate the crime scene independently.

Section 2: Tuesday (Chapters 16 to 25)

Eddie, Harper, and security guard Holten visit Bobby’s townhome.

They notice no blood from Ariella is on Carl’s side of the bed, which is impossible because Carl was heavier. This shows Carl’s body was placed there after Ariella’s blood dried.

Kane passes the courthouse security checks using Wally Cook’s identity. Prosecutor Art Pryor challenges Kane from the main jury. Kane is placed as the first alternate juror, Juror Thirteen.

Eddie and Harper meet FBI analyst Paige Delaney. She tells them about the serial killer “Dollar Bill” and the folded dollar bills left in past cases. Eddie meets jury consultant Arnold Novoselic and distrusts him.

Corrupt detectives Mike Granger and Joseph Anderson beat Eddie outside his office.

Judge Ford finds Eddie unconscious and helps him inside. They talk about Pryor’s ruthless style.

Section 3: Wednesday (Chapters 26 to 48)

The trial of Robert Solomon begins.

Art Pryor gives a strong opening statement that sways the jury. Eddie introduces the possibility of a third-party serial killer.

Bobby has an epileptic seizure in court. Rudy Carp reveals Bobby’s condition and then leaves the case when the studio pulls funding.

Eddie becomes lead defense attorney. Kane runs over juror Brenda Kowolski. Judge Ford sequesters the jury at Grady’s Inn, and Kane moves into the main jury.

Detective Anderson testifies about the physical evidence and the murder weapon found in a light fixture.

Eddie uses a mattress demonstration to prove Carl could not have been in the bed when Ariella was stabbed. Kane frames juror Spencer Colbert with a forged “Guilty” note.

Spencer is dismissed. Paige Delaney and Harper share new details from past “Dollar Bill” cases.

Section 4: Thursday (Chapters 49 to 66)

Juror Manuel Ortega is found dead in his bathroom at Grady’s Inn. Police call it a suicide, but Kane strangled him during the night. Medical examiner Sharon Morgan testifies about the star-shaped wounds on Ariella.

Eddie links the wounds to the Great Seal on the dollar bill. Eddie questions forensic technician Todd Kinney about how easily a dollar bill can be planted.

Delaney and Harper find the killer targets people whose lives suddenly improved, like lottery winners. They also realize the killer must have been on every past jury.

Kane kills Arnold Novoselic in Rhode Island and frames Eddie. Granger and Anderson arrest Eddie and try to kill him in a staged escape.

Eddie fights back, causes a crash, and is rescued by Harper and Judge Ford.

The corrupt officers die. Both sides give closing arguments, and the jury is dismissed to deliberate.

Section 5: Friday (Chapters 67 to 73)

FBI SWAT storms Grady’s Inn but targets the wrong juror because Kane planted a notebook.

Kane escapes through a window, kills Art Pryor, and steals his clothes and car. Eddie and Harper realize the killer’s DNA profile belongs to Russell McPartland, a corrupt security guard who swapped samples years ago.

They go to Bobby’s safe house, where Kane holds Bobby at gunpoint.

A chaotic shootout begins with SWAT and tear gas. Kane kills several federal agents. Eddie grabs a Glock and shoots Kane multiple times, killing him with a headshot.

Eddie exposes Holten as Russell McPartland, Kane’s inside accomplice. Delaney and Harper shoot McPartland before he can kill Eddie.

Later, the innocent men framed by Kane are cleared, and Bobby is free.

Eddie signs his divorce papers but promises to keep defending the innocent.

Characters In This Book

Character	Role
Eddie Flynn	Defense attorney and former con artist who represents Robert Solomon.
Joshua Kane	Serial killer known as “Dollar Bill” who feels no physical pain and joins the jury.
Robert “Bobby” Solomon	Movie star falsely accused of killing his wife and security chief.
Ariella Bloom	Bobby’s wife and a famous actress who is stabbed to death.
Carl Tozer	Bobby’s head of security who is killed and posed on the bed.
Rudy Carp	Celebrity defense attorney who first hires Eddie for the case.
Art Pryor	Prosecutor who has never lost a murder case in twenty years.
Judge Harry Ford	Presiding judge and Eddie’s close friend and mentor.
Harper	Former FBI agent and private investigator who helps Eddie examine the evidence.
Paige Delaney	FBI Behavioral Analysis Unit analyst tracking “Dollar Bill.”
Arnold Novoselic	Jury consultant who is murdered by Kane.
Detective Joseph Anderson	Corrupt homicide detective who testifies and later tries to kill Eddie.
Detective Mike Granger	Veteran cop who conspires with Anderson against Eddie.
Holten / Russell McPartland	Bobby’s security guard who is secretly Kane’s accomplice.
Christine	Eddie’s estranged wife seeking a divorce.
Amy	Eddie’s twelve-year-old daughter.

The Killer in the Jury Box

Theme	How the book presents it
Illusion of Truth	Forensic evidence is planted, corrupt police manipulate reports, and Kane controls the jury from inside.
Preservation of Innocence	Eddie Flynn continues to fight for falsely accused clients despite physical attacks and personal loss.
Physical and Emotional Pain	Kane cannot feel physical pain, while Eddie lives with injuries and the emotional cost of his failing marriage.
Deconstruction of the American Dream	Kane targets people whose lives have recently improved, such as movie stars and lottery winners, and destroys them.

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