Cross and Sampson Summary: A Relentless Dual-Investigation Thriller by James Patterson
Introduction: A Father’s Desperate Hunt
A quiet evening shatters twice.
In Washington D.C., a car bomb erupts at Thirteenth and N Street NW, sending Detective John Sampson into the smoke.
Hundreds of miles away, forensic psychologist Alex Cross receives a call that stops his heart: his son Damon, a graduate student at UNC, has been missing for three days.
This thirty-fifth entry in the Alex Cross series places the franchise’s central partnership under unprecedented strain, forcing both men to operate in separate states while facing threats that feel disturbingly close to home.
The novel moves between the historic streets of the nation’s capital and the wooded academic landscape of Chapel Hill, North Carolina.
Domestic terrorism, racial extremism, and buried government secrets converge as both protagonists race against time.
What follows is a story about how far fathers will go when their children vanish, and what happens when institutional trust erodes from within.
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TL;DR
Two investigations, one unbreakable bond. Alex Cross flies to North Carolina when his son Damon disappears from UNC, only to discover a white supremacist has kidnapped him and two others as part of a deranged social experiment.
Meanwhile, John Sampson hunts a serial bomber in D.C., uncovering a CIA cover-up involving treason, military codes sold to the Taliban, and targeted assassinations of whistleblowers.
Both cases resolve through grit and teamwork, ending with a family dinner at Nana Mama’s house.
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Cross and Sampson Summary: The Full Story
SPOILER WARNING: This section recounts the complete plot, including the ending.
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The story opens on a night that should have been peaceful. Alex Cross and John Sampson are enjoying a rare quiet moment when a massive car bombing tears through downtown D.C. at Thirteenth and N Street NW.
Before Sampson can fully process the scene, Alex and his wife Bree Stone receive a phone call from Professor Clarisse Pope at the University of North Carolina.
Their son Damon, a psychology graduate student, has vanished. He has not responded to texts, calls, or emails for three days.
Alex and Bree fly to North Carolina immediately. On campus, they encounter bureaucratic resistance from campus security and local police, who treat Damon as a healthy adult who may have left voluntarily.
Refusing to wait, Alex and Bree conduct their own forensic search of Damon’s apartment. They discover his bicycle is missing and begin piecing together his last known movements.
They meet Melissa Lange, Damon’s girlfriend, who initially seems evasive. Eventually, she opens up and connects them with other graduate students who provide crucial information.

Alex discovers a hidden trail in the Mason Farm Biological Reserve. The path leads to a fortified farmhouse owned by Colton Brophy, a radicalized white supremacist and Civil War reenactor.
Brophy has kidnapped Damon, along with Professor Darius Lucas and his teaching assistant Amy Tyne. His motive is a deranged obsession with preventing what he calls “race-mixing.”
Alex is captured by Brophy and thrown into an underground, bombproof pit where the other captives are being held.
Back in Washington D.C., Sampson joins a task force with FBI Agent Ned Mahoney and ATF explosives expert Anna Rizzo. Using advanced facial recognition software, they identify a prime suspect: Aiden Phillips.
Phillips is a decorated ex-Special Forces veteran with severe PTSD who was spotted at multiple bombing sites. A raid on his motel room fails to capture him.
Phillips retaliates by planting a bomb in Sampson’s driveway. The explosion kills Anna Rizzo, devastating the task force.
But then Phillips corners Sampson at his home and makes a startling claim: he is being framed. He reveals the real mastermind is J.T. Polermo, another veteran working with high-level CIA operative Tom Walsh.
The conspiracy traces back to Afghanistan, where Walsh orchestrated the sale of military codes to the Taliban. The bombings in D.C. are actually targeted assassinations designed to eliminate whistleblowers who knew about the treason.
In North Carolina, Melissa helps Alex and the other captives escape the underground pit by tricking Brophy. Alex manages to signal for help with his phone.
Police arrive and arrest Brophy. The captives are freed.
In D.C., Sampson and Phillips track Polermo to a final confrontation. After a firefight, Polermo is captured.
The book concludes with a secret congressional hearing where the full scope of Walsh’s treason is revealed. Walsh is exiled, Polermo is imprisoned, and Aiden Phillips is cleared of all charges. Phillips returns to his family.
The Cross and Sampson families reunite for a celebratory dinner at Nana Mama’s house, closing the story on a note of hard-won peace.
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Characters In This Book
| Character | Role |
|---|---|
| Alex Cross | Forensic psychologist and FBI consultant who leads the search for his missing son. |
| John Sampson | Alex’s lifelong best friend and a DC Metro Police detective investigating the bombings. |
| Damon Cross | Alex’s son, a UNC graduate student whose kidnapping sets the North Carolina plot in motion. |
| Bree Stone | Alex’s wife and a top investigator for the Bluestone Group who provides critical tech and tactical support. |
| Nana Mama | The 90-year-old matriarch of the Cross family who provides emotional stability and home-cooked meals. |
| Anna Rizzo | ATF explosives enforcement officer who partners with Sampson before being killed by a bomb. |
| Aiden Phillips | Ex-Special Forces bomb expert initially suspected of the bombings who turns out to be a whistleblower. |
| Melissa Lange | Damon’s girlfriend and a UNC grad student who assists in the search for him. |
| Colton Brophy | Racist Civil War reenactor who kidnaps Damon, Lucas, and Tyne in a deranged social experiment. |
| J.T. Polermo | The real serial bomber, a former Army lieutenant carrying out assassinations for the CIA. |
| Tom Walsh | Corrupt CIA officer who orchestrated the bombings to cover up his treasonous sale of codes to the Taliban. |
| Darius Lucas | Professor kidnapped by Brophy due to his research and perceived “race-mixing.” |
| Amy Tyne | Teaching assistant kidnapped alongside Professor Lucas. |
| Gail Bailey | Chapel Hill detective who eventually assists Alex in the rescue mission. |

Frequently Asked Questions
How does Cross and Sampson end?
A secret congressional hearing exposes CIA operative Tom Walsh’s treason, including the sale of military codes to the Taliban; Walsh is exiled, J.T. Polermo is imprisoned, and Aiden Phillips is cleared, with the Cross and Sampson families reuniting for dinner at Nana Mama’s house.
What happens to Damon Cross in Cross and Sampson?
Damon Cross is kidnapped by white supremacist Colton Brophy and held in an underground pit before escaping with help from his girlfriend Melissa and his father Alex, who signals police for rescue.
Who is the real bomber in Cross and Sampson?
J.T. Polermo, a former Army lieutenant, is the actual serial bomber, carrying out targeted assassinations on behalf of corrupt CIA officer Tom Walsh to eliminate whistleblowers.
Is Aiden Phillips guilty of the bombings in this Alex Cross thriller?
No, Aiden Phillips is a framed whistleblower and ex-Special Forces veteran who helps John Sampson track down the real perpetrator after being cleared of all charges.
Does Anna Rizzo survive in Cross and Sampson?
ATF explosives expert Anna Rizzo is killed when Aiden Phillips, attempting to make contact with Sampson, plants a bomb in Sampson’s driveway that fatally wounds her.
What motivates Colton Brophy to kidnap Damon Cross?
Colton Brophy, a radicalized white supremacist and Civil War reenactor, kidnaps Damon along with Professor Darius Lucas and Amy Tyne as part of a deranged effort to prevent what he calls “race-mixing.”
Where does Cross and Sampson take place?
The novel unfolds across two primary locations: Washington D.C., where John Sampson investigates the bombings, and Chapel Hill, North Carolina, where Alex Cross searches for his missing son Damon at UNC.
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Similar Books Worth Reading
Fear No Evil by James Patterson — Another Alex Cross entry where the Cross family is targeted by a relentless enemy in the wilderness, matching the personal stakes of Cross & Sampson.
Triple Cross by James Patterson — Alex Cross and John Sampson hunt a killer who targets families, echoing the procedural and personal dynamics central to this book.
The Black Book by James Patterson and David Ellis — A gritty thriller involving police corruption and high-level secrets in a major city, similar in tone and conspiracy depth.
Long Road to Mercy by David Baldacci — An FBI agent investigates a disappearance that uncovers a much larger conspiracy, paralleling the dual-investigation structure.
The Gray Man by Mark Greaney — Explores ex-military operatives, rogue missions, and deep-state corruption in a manner similar to the Aiden Phillips plotline.
The Terminal List by Jack Carr — A Navy SEAL seeks revenge against high-level government corruption following a catastrophic military failure, matching the veteran-driven conspiracy elements.
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