The film was shot in various locations in New York and also in Northern Ireland. The plot tells of a grim investigation into a series of strange deaths in New York, where victims are found mutilated with a mathematical formula carved into their skin. The formula wΔz = Cov(w,z) = βwzVz, borrowed from evolutionary biology and known as the Price equation, becomes the central mystery for detectives trying to understand the killer's motives. Captain McLean's team, including seasoned detective Eddie Argo played by Stellan Skarsgård and his new partner Helen Westcott played by Melissa George, gradually uncovers that each victim was forced to make an impossible choice between sacrificing their own life or that of a loved one. The investigation reveals that the perpetrator himself experienced a similar traumatic loss and is now driven by a twisted philosophical quest to solve the equation through real human suffering. The film combines elements of a crime thriller with psychological horror and explores dark themes of love, sacrifice, and revenge in an urban setting.

Filming locations:

Kent Avenue and South 2nd Street, Brooklyn

In the movie

The scene where detectives pursue leads related to the killer's modus operandi at this intersection in Brooklyn. The grim industrial landscape by the waterfront enhances the dark and oppressive atmosphere of the film as the team tries to connect the victims to the perpetrator's twisted philosophical mission.

In reality

The scene was filmed at the corner of the Williamsburg section of Brooklyn by the East River waterfront. Kent Avenue runs along the water and was historically an industrial corridor with factories and warehouses. In recent years, the area has changed dramatically with the arrival of luxury condominiums and parks, but during filming it retained a raw post-industrial look.

West Street and Greenpoint Avenue, Brooklyn

In the movie

The scene where detectives examine one of the crime scenes in this area of Brooklyn, studying evidence related to the series of murders where a mysterious formula is carved into the victims' skin. The harsh industrial surroundings of Greenpoint create a tense backdrop for the police work on screen.

In reality

The scene was filmed at the intersection in the Greenpoint neighborhood of Brooklyn. West Street crosses Greenpoint Avenue in an industrial area that is gradually turning residential and commercial. The streets are surrounded by warehouses, small businesses, and new residential complexes, typical of Greenpoint's renewal over the past two decades.