A private detective and amputee managing the emotional fallout of recent personal losses, including the suicide of his ex-fiancée and the death of his uncle. He harbors unspoken feelings for his business partner, Robin, while handling a demanding professional life. He maintains a gruff exterior but shows deep compassion for vulnerable clients.

A thirty-two-year-old private detective and partner at the agency. She is recovering from the physical and psychological toll of a recent undercover infiltration into a coercive cult. She is empathetic, highly observant, and dedicated to her career, though she struggles to balance the demands of her job with traditional relationship expectations.

The alias used by a short, stocky, bearded man working at Ramsay Silver. His mutilated body is found in the vault, launching a complex investigation into his true identity. Several missing men, spanning different social classes, fit his physical profile.

A musician in his mid-forties who lives opposite Tyler Powell's grandmother. He presents a bohemian, youthful persona, decorating his home with eclectic items. He provides the detectives with background information about Tyler's disappearance and claims to have a daughter who is traveling.

A new mother who insists the body in the silver vault is her missing boyfriend, Rupert. She faces opposition from her wealthy family regarding her relationship and hires the detectives to uncover the truth. She fears her boyfriend was targeted over a stolen silver heirloom.

A CID officer and recovering alcoholic who is currently dating Robin. He feels stressed by his own police caseload and expresses strong disapproval of Robin's involvement in a case that competes with an official police investigation. He pushes Robin toward traditional relationship milestones.

A young man who grew up in Switzerland before returning to the UK to work at a private members' club. He is missing and suspected by Decima to be the victim in the silver vault. He previously stole a family heirloom and has a troubled history with Decima's father.

Strike's volatile, aristocratic former partner who recently died by suicide. Her death casts a long shadow over Strike, as her wealthy and influential family actively blames him for her passing.

Decima's father and Rupert's godfather. He is an influential, wealthy man who strongly disapproves of his daughter's relationship with Rupert and possesses a silver heirloom he won from Rupert's father in a backgammon game.

Charlotte Campbell and Decima Mullins's half-brother. He works as a stylist and harbors deep hostility toward Strike, blaming the detective for Charlotte's death while also aggressively opposing Decima's relationship with Rupert.

The owner of Ramsay Silver, where the murder took place. He deals with the business fallout of the crime and shares suppressed details about masonic hallmarks found on the victim's body.

Kenneth Ramsay's sister-in-law, who assists at the silver shop despite suffering from a botched eye surgery that left her visually impaired. She is hostile and defensive when questioned about the day of the murder.

A cleaner employed at Ramsay Silver. He has a criminal record and was one of the last people seen interacting with William Wright on the day the victim was murdered.

A recently hired investigative contractor at Strike and Robin's agency. She exhibits flirtatious behavior toward Strike, actively seeks his attention, and frequently behaves dismissively toward Robin.

A wealthy former Conservative MP and Freemason known for his charitable work. He attempts to use his political and social influence to pressure the detectives into dropping their investigation.

A journalist conducting a vindictive smear campaign against Strike. He publishes fabricated stories about Strike's personal and professional life to damage his credibility.

A famous rock star and Strike's estranged biological father. He attempts to reconnect with his son and correct long-held misconceptions about his past financial support for Strike.

Strike's reliable contact within London's criminal underworld. He provides crucial context about missing gangsters and warns Strike about the dangers of investigating influential Freemasons.

Charlotte Campbell's half-brother and a working actor. He claims devotion to his late sister but has a history of dismissing her severe mental health struggles.

A missing mechanic from Ironbridge. He became a social outcast in his hometown following a fatal car accident involving his vehicle and subsequently disappeared.

A former SAS paratrooper who disappeared from Scotland. He sustained a severe brain injury during a covert military operation, and his case attracts the interest of military intelligence.

An adult film star who goes missing after attempting to blackmail a wealthy former politician. He possesses damaging information about powerful individuals and is forced to flee.

A police detective navigating depression and personal misfortune following the death of his brother and the end of his marriage. He shares unofficial information with Strike.

Tyler Powell's elderly and sometimes confused grandmother who lives in Ironbridge. She believes her grandson might be the man found in the silver vault.

The wife of missing ex-paratrooper Niall Semple. She provides Strike with a coded note her husband left before disappearing.

An agent working for MI5. He pressures Strike to abandon the investigation, explicitly denying that the body in the vault belongs to Niall Semple.