The House of Cross

The novel opens with U.S. Supreme Court Justice Margaret Blevins experiencing a mysterious attack during a predawn jog near her Potomac, Maryland, home. She feels a sharp blow to her head, causing dizziness and nausea, but the symptoms pass quickly and she tells no one. Meanwhile, in northern Nevada, a man named Malcomb flees in a wheelchair-adapted van, pursued by a helicopter carrying his physical double. He begins recording an encrypted message to Alex Cross but is cut off when a dump truck blocks the road, sending his van through a guardrail and into a canyon. A woman in a deputy's uniform radios that the operation went smoothly.

In Washington, DC, federal appeals court Judge Emma Franklin, the only Black woman on the DC Court of Appeals, is assassinated along with her driver, Agnes Pearson, by a blond woman disguised as a jogger who fires a suppressed pistol, collects her shell casings, and jogs away. Alex Cross, an FBI consultant in criminal psychology, is called to the scene by supervising special agent Ned Mahoney. Cross lives with his wife, Bree Stone, a former DC Metro chief of detectives now with a private investigative firm; his grandmother, Nana Mama; and his children, including his youngest son, Ali. Cross and Mahoney determine the killing was a professional hit.

The next morning, news breaks that reclusive billionaire Ryan Malcomb, founder of the data-mining company Paladin, has died in the Nevada crash. Bree is convinced Malcomb was "M," the leader of Maestro, a vigilante group she, Cross, and their close friend, DC Metro homicide detective John Sampson, have investigated for years. Maestro has been linked to killings of drug agents, cartel leaders, and human traffickers.

Cross and Mahoney pursue leads: surveillance footage of a gray Dodge Durango that tailed Franklin's car, traced to Agnes's estranged husband, Aldo Pearson, who breaks down upon learning of his wife's death; and a tip about Professor Willa Whelan of George Washington University, who threatened Franklin at a fundraiser. A search of Whelan's home reveals a hidden room wallpapered with clippings about Franklin but no definitive proof of involvement. Bree independently investigates Malcomb's death and connects a ranch he visited to a Brazilian cattle company linked to a prior Maestro operation; both companies share a city block in Belo Horizonte, Brazil.

Days later, Judge Bitgaram Pak of the Ninth Circuit Court of Appeals is stabbed to death in San Francisco by a woman disguised as a homeless person. Security footage shows the killer discarding her disguise to reveal short, spiky blond hair matching the Franklin shooter. Then, in Athens, Georgia, Professor Nathan Carver, a constitutional law expert, is shot dead outside his home. Enhanced audio captures the assassin saying, "Maestro knows what you've done. It's over." Cross and Mahoney learn all three victims were on a list of Supreme Court candidates compiled by an advisory panel to President-Elect Sue Winter. The last name on the panel is Theresa May Alcott, Malcomb's adoptive aunt.

Bree and Sampson trace Malcomb's origins, discovering that he and his identical twin, Sean, were born in Salmon, Idaho, given up through a black-market adoption, and raised by Norman and Patricia Wheeler, who were stabbed to death when the boys were nine. The twins were then adopted by Alcott. Most critically, birth records and DNA databases confirm the twins are genetically identical, meaning the DNA evidence identifying the crash victim as Ryan is equally consistent with Sean having been in the van. Ryan Malcomb could still be alive. During joint research, Bree and Sampson also discover that the attorneys who represented both Brazilian shell companies in land purchases were murdered after the deals closed, reinforcing the link to Maestro.

Cross and Mahoney interview Alcott at her Wyoming ranch. She denies knowledge of Maestro and confirms both twins congenitally lacked upper lateral incisors and had bridgework as teenagers, though she does not know whether Sean later received implants. She describes Sean as brilliant but violent, diagnosed with multiple psychiatric conditions after attacking Ryan with a knife at 16. Sean took his inheritance at 18 and vanished.

Bree and Sampson travel to Nevada and Idaho, visiting the crash site and the twins' biological mother. However, Deputy Patty Rogers, who investigated the crash, is secretly a Maestro operative. She alerts Brian Toomey, a professional cleaner for the organization, who ambushes Bree and Sampson on a remote highway and transports them while drugged to an abandoned silver mine complex in British Columbia.

Cross searches desperately for them. FBI consultant Keith Karl Rawlins detects a brief transmission from Bree's phone in British Columbia's wilderness. Cross flies to Kimberley, BC, and partners with Royal Canadian Mounted Police (RCMP) Officer Molly Fagan for a snowmobile expedition. They encounter Maestro operatives near the mine and come under fire. Cross and Fagan together kill six of the pursuing attackers, though Fagan's snowmobile goes over a canyon rim; she survives by landing in deep snow. Contacted over a captured radio, Cross surrenders but first activates a Jiobit GPS tracker, a child-tracking device belonging to Sampson's daughter Willow, and hangs it on a tree with his weapons.

Inside the underground fortress, Ryan Malcomb reveals himself as M, alive and operating from the converted mine. He claims there were two Ms: himself, who genuinely helped Cross's investigations, and his unstable twin Sean, who was cruel and erratic. He admits engineering Sean's death in the van crash while faking his own. Malcomb argues that Maestro operates democratically, voting on targets based on Paladin's data, and justifies the judicial assassinations by claiming each victim had hidden corruption or would cause legal chaos if appointed to the Supreme Court. Under questioning, he confirms Sean murdered their adoptive parents at age nine. He gives Cross, Bree, and Sampson 12 hours to decide whether to join Maestro.

After 17 hours, Malcomb rescinds the offer and releases them into the wilderness without snowmobiles. Cross leads them toward his cached weapons. Sampson devises an ambush using a rusted mining cable, killing the lead pursuer and arming the group. In the firefight, Maestro operative Lucas Bean, a former British Special Air Service soldier, shoots Sampson in the abdomen. Mahoney, alerted by the Jiobit's intermittent signal that Ali spotted on the tracking app, arrives with RCMP reinforcements. The rescue team kills Bean and other operatives moments before they can execute Cross and Bree. Malcomb escapes by helicopter and detonates explosions that destroy the complex. Sampson is airlifted to a hospital.

On Inauguration Day, Cross briefs security officials on Malcomb's threat to the judiciary, and protection on all nine justices is doubled. Rawlins, installed at the seized Paladin headquarters, discovers digital filters Malcomb embedded to hide his assassin, Katrina White, a former Russian GRU Sparrow (a military intelligence operative trained in covert assassination), from biometric databases. Once removed, White is identified entering the U.S. from Vancouver.

White infiltrates George Washington University Hospital posing as a nurse and uses a next-generation sonic weapon to kill Justice Mayweather. Cross connects the weapon to Blevins's earlier symptoms and realizes she is the next target. He, Bree, and Mahoney race to Blevins's neighborhood, where Bree approaches White from behind as the assassin hides in hemlock trees with the weapon aimed at the approaching justice. Cornered, White places the sonic weapon's triggering device in her mouth and bites down, killing herself. Blevins is saved.

In the aftermath, Paladin is nationalized, and a global manhunt for Malcomb continues. He calls Cross, claiming he is dying and that Maestro is finished. Cross vows never to forget or forgive. At a Valentine's Day engagement party, Sampson reads aloud a love letter he wrote to his fiancée, Rebecca Cantrell, during the flight west, a letter Cross found sealed in Sampson's pack in Idaho. Rebecca, who proposed to Sampson in his hospital room with daughter Willow's encouragement, embraces him as family and friends cheer.