Digital Guillotine

In the rust-belt city of Ironhaven, a string of inexplicable deaths—heart attacks, drownings, hypothermia—plague the populace. No bullets, no knives, no witnesses. Only forensic investigator Nora Cross suspects the truth: someone is weaponizing the city's smart grid and water mains. As she hunts a ghost in the machine, she discovers a dark web forum where anonymous users bid on "natural" assassinations. The killer, known only as "Rust," believes that anonymity is the ultimate shield—and the ultimate permission to kill without consequence.