Suspect Zero is a psychological thriller directed by E. Elias Merhige and released in 2004. The movie follows FBI agent Thomas Mackelway (played by Aaron Eckhart) as he investigates a string of murders committed by a mysterious serial killer. The killer has a unique modus operandi, targeting and brutally murdering other serial killers.
Mackelway is assigned to the case due to his previous involvement in a failed investigation in which he was convinced a suspect was guilty, but the case fell apart in court. As he delves deeper into the current case, he becomes obsessed with finding the killer, who is referred to as "Suspect Zero." With the help of a local sheriff (played by Carrie-Anne Moss) and a former FBI agent (played by Ben Kingsley), Mackelway uncovers a trail of clues leading to the suspected killer, who may have ties to a government operation that used psychic abilities for military purposes.
Throughout the film, Mackelway struggles with his own demons, as he is haunted by the failure of his previous case and his own mental instability. His obsession with Suspect Zero leads him on a dangerous and unconventional path, as he begins to see visions and hear voices that may hold the key to catching the elusive killer.
The film creates a sinister and uneasy atmosphere, with dark and gritty cinematography and a haunting score by Clint Mansell. The plot twists and turns, keeping the audience guessing until the very end. Suspect Zero received mixed reviews upon its release but has gained a cult following over time for its unique take on the serial killer genre.