Alex Cross Must Die

This Alex Cross novel follows three intertwining investigations in and around Washington, DC: a terrorist attack on a commercial airliner, a serial killer targeting men with hidden pasts, and a missing tech executive.

A 48-year-old man using the alias Marion Davis spends three days in a motel near Joint Base Andrews preparing for mass murder. He destroys all forensic traces, shaves his body to prevent shedding DNA, and dons a hazmat suit beneath a Baltimore Ravens hoodie and a National Park Service coverall. He loads a rented tan utility van with the components of a Vietnam-era Browning M2 .50-caliber machine gun, a laptop-controlled targeting system, fertilizer explosives, and a mountain bike. At dusk, he parks at Gravelly Point Park beside Reagan National Airport's runway and assembles a remote-controlled firing system inside the van. After deflecting a police officer with his Park Service disguise, he rides the bike south along the Potomac and remotely activates the weapon as American Airlines Flight 839 begins its final approach from Palm Beach. Roughly 180 rounds rake the jet's nose, cockpit, and forward landing gear. The plane cartwheels on impact and explodes, killing all passengers and crew. The shooter detonates a fertilizer bomb inside the van to destroy evidence and disappears.

Alex Cross, an investigative consultant to both the Metropolitan Police Department (MPD) and the FBI, and his partner John Sampson, a senior MPD homicide detective, are interviewing the widow of the fourth victim in the Dead Hours serial murder case when they hear the distant explosion. FBI special agent Ned Mahoney, Cross's close friend, summons them to the crash site. The scene is catastrophic, with no survivors. Investigators confirm .50-caliber bullet holes in the wreckage and recover fragments of the Browning, a remote-control system, and a scorched Avis rental agreement from the bombed-out van.

Cross's wife Bree, a former MPD chief of detectives now working for the Bluestone Group security firm, is pulled into a separate case when her boss Elena Martin reports that her best friend Leigh Anne Asher, CEO of tech company Amalgam, has been unreachable for three days as the company prepares to go public. Bree discovers that Asher was born in Ireland as Maggie Fontaine and entered a sham marriage with attorney Rolf Himmel for citizenship purposes. When Sampson recognizes the name Maggie Fontaine on the Flight 839 passenger manifest, the cases collide. Bree confirms Asher was aboard and discovers that the man beside her, traveling under an alias, was FBI special agent Charles Stimson, who had been investigating Amalgam's finances. Asher and Stimson had fallen in love during the investigation, and the engagement ring found on the body was real.

The FBI lab recovers the name Marion Davis from the scorched rental agreement. Cross and Sampson trace it to Captain Marion Davis, a football coach at the elite Charles School and a former military pilot who has an alcohol addiction and experiences blackout episodes. Davis has no memory of the two days surrounding the shootdown; his assistant coach reveals that Davis left a sports bar on the preceding Sunday with an unknown woman and was not seen again until Tuesday. A search of his garage turns up a coverall and Ravens hoodie that test positive for explosives residue. Mahoney reveals Davis was washed out of an American Airlines pilot training program for showing up with alcohol on his breath, giving him a grudge against the very airline attacked. Davis is arrested, but the case unravels: Bar security footage shows the woman drugging Davis's drink, the rental agreement signature shows signs of forgery, and the DNA on the contaminated clothing appears planted. U.S. Attorney Rebecca Cantrell orders Davis released.

Cross and Mahoney travel to rural North Carolina, where sheriff's detective Melanie Toof leads them to the compound of Leslie Parks, a deceased gunrunner. In Parks's armory, they find an empty Browning machine gun crate and two boxes that once held Stinger missiles, shoulder-fired anti-aircraft weapons; the warheads are missing. Toof suspects Parks was murdered despite the official suicide ruling and reveals that an Iraqi refugee named Ibrahim visited shortly before Parks's death. Photographs on Parks's wall show him with both Captain Davis and a bearded man who may be Ibrahim. A subsequent FBI raid on Sami Abdallah, a former Parks associate in Maryland, erupts into a firefight. Cross saves a wounded child, and a neighbor confirms that both Parks and the bearded man visited Abdallah.

In the Dead Hours investigation, Ali Cross, Alex's 10-year-old son, secretly photographs crowds at multiple crime scenes. Ali, who has tested as a "super-recognizer" with an exceptional ability to identify faces despite disguises, spots the same man at three scenes in varying disguises. Despite changes in hair color and beard style, the man is identifiable by consistent bone structure and a distinctive half-missing earlobe. FBI analysis identifies the man as Padraig "Paddy" Filson, a terminally ill former British Special Air Service (SAS) commando turned contract assassin. Cross and Sampson arrest Filson at a Virginia campground, where they find disguises and his signature weapon: a double-barreled pistol designed to shoot out both of a victim's eyes simultaneously.

In interrogation, Filson reveals that each victim had sealed juvenile records involving child molestation and continued predatory behavior as adults. He describes being recruited by a mysterious figure, speaking through a voice-distortion device, who offered $50,000 per kill. The organization that secured his early release from prison was a front. Most alarmingly, Filson's driver referred to the anonymous organizer as "the Maestro" (342), connecting the Dead Hours killings to M, a long-standing archnemesis of Cross and Sampson who leads a shadowy vigilante network.

Bree separately investigates the murder of Iliana Meadows, a college runner and friend of Alex's daughter Jannie. Iliana was being blackmailed over a sex tape her high-school coach made when she was 17 and had inherited millions from a wrongful-death settlement. Bree discovers that Iliana's teammate Tina Dawson used a keystroke-logging device disguised as a Wi-Fi booster to access Iliana's financial information. Confronted with the evidence, including Bree's allegation that Dawson likely left blood in the Airbnb's second shower drain, Dawson flees and steps into the path of a semi-truck, dying instantly.

The AA 839 investigation reaches its climax when Cross identifies Ibrahim Obaid as the terrorist. Obaid, an Iraqi refugee whose family was killed by bombs dropped from Captain Davis's fighter jet, legally changed his name to Marion Davis, killed Parks, stole the weapons, and framed the real Davis. After kidnapping Captain Davis and Fiona Plum, a Charles School teacher, Obaid drives to Dulles International Airport and forces the bound Davis to carry a Stinger launcher toward the runway. Davis charges Obaid as the first jet takes off; the aged missile misfires. Obaid loads a second warhead, but Cross arrives on the runway in a snowplow dump truck and radios the tower to halt flights. Obaid fires the second Stinger at the truck; it explodes against the plow blade without stopping the vehicle. When Obaid turns to shoot, Cross fires from the truck window and kills the terrorist.

One week later, Captain Davis and Fiona Plum announce their engagement as Plum recovers in the hospital. Paddy Filson dies of a heart attack in his cell before Cross can question him further about Maestro. Cross, Bree, and Mahoney agree to fly to Boston to investigate Ryan Malcomb, the reclusive billionaire Bree suspects of being M, determined to dismantle the Maestro network once and for all.