A ritual killer turns New Year's resolutions into a death calendar, and an exhausted FBI agent has one month to stop the story from ending in blood. Deadly Resolutions is a dark, page-turning psychological thriller and serial killer crime novel that launches The Holiday Killings series. A ritual murderer targets people who break public New Year's resolutions, staging each death as suicide while sending taunting messages to the FBI, turning New Year's Eve into a citywide nightmare. Special Agent Riker, burned by loss and guilt, joins forces with driven newcomer Hart on a winter case where every hour, every rooftop party, every hotel suite might hide the next scene.The killer treats self-help culture and social media as a stage. Witness, a private program built around public vows and Renewal banquets, feeds him targets. As Riker and Hart race from high-rise balconies to drained pools, from church basements to a chocolate factory on the pier, they face a mind that sees murder as correction, not crime.This first book in the series blends psychological suspense, FBI procedural detail, police procedural investigation, and tense cat-and-mouse pacing. The case stands alone, while a larger conspiracy threads through Witness donors, city politics, and a shadowy organizer known only as Choirboy, setting up future Holiday Killings novels that focus on Valentine's Day, St. Patrick's Day, Easter, and more.Perfect for readers who seek serial-killer thrillers, FBI crime thrillers, mystery thrillers, and dark psychological suspense with a strong investigative team. Strong appeal for fans of Meg Gardiner, Karin Slaughter, Alex North, Lisa Gardner, and readers who enjoy shows such as Mindhunter or Luther.Expect an obsessive killer with ritual methods, an emotionally scarred FBI agent, a sharp female partner, tense interrogation scenes, detailed crime scenes, a twisty case structure, and a bleak winter city setting, which suits fans of gritty modern crime fiction and long-running detective series.