Detective Superintendent Roy Grace, based in Brighton, is a dedicated officer whose career has hit a significant low. Haunted by the unresolved case of his missing wife, Sandy, he tirelessly investigates cold cases that seem destined for failure. Despite his unwavering commitment, Grace often faces backlash for his unconventional policing style, leading to disciplinary actions that threaten to derail his passion for the job. As he navigates the precarious balance between his determination and career jeopardy, Grace’s obsession with solving the mystery of his wife’s disappearance remains a driving force in his life.