A retired MI5 spy living in Coopers Chase with her husband, Stephen, and typically the leader of the Thursday Murder Club. Known for her spy skills, she navigates challenges with resilience and is deeply concerned about her husband's well-being.

An 80-year-old retired psychiatrist originally from Egypt, who occasionally shares intellectual insights with the Thursday Murder Club. He plays a critical role in the investigation due to his unique connections.

A former trade union leader and devoted West Ham fan, known for his outspoken nature and his dislike of authority. He is a loyal friend who values relationships, even as he tackles personal stubbornness.

A Polish builder and handyman often associated with the Thursday Murder Club. Close to Elizabeth and Stephen, he assists with their practical needs and has a growing relationship with Donna.

A Police Constable and key contact for the Thursday Murder Club, who is open to unconventional methods of investigation. She is known for her supportive role and new romantic relationship with Bogdan.

A Detective Chief Inspector and Donna's partner who is closely involved with the Thursday Murder Club. As the series progresses, he becomes more amenable to their investigation methods.

Senior Investigating Officer leading the National Crime Agency team overseeing the case. She faces internal pressures but eventually collaborates with local law enforcement.

Elizabeth’s husband dealing with dementia, whose condition affects their personal lives and Elizabeth's focus. He is cared for by Elizabeth and maintains a bond through chess games with Bogdan.

Prominent heroin importer on England’s South Coast, involved in a crucial missing shipment. He struggles with the fallout from his operations when things go awry.

Assistant to Mitch Maxwell, involved in executing the imports and faced with the consequences of a lost heroin shipment. He plays a significant role in the unfolding events.

Mitch's business partner in charge of distribution, whose secret activities impact the success of their operations. He has an unstated connection to law enforcement.

Leading cocaine dealer on the South Coast and an opportunistic player in the illicit drug trade. She engages weekly with Ibrahim as his psychiatry patient, providing valuable insights.

A charming retiree living in Coopers Chase, who becomes the subject of Joyce’s affections. However, he directs his romantic efforts elsewhere with another online interest.

Tech expert at Coopers Chase, recruited by the Thursday Murder Club to assist in their technological needs. His skills play a vital role in their investigative efforts.

An antiques dealer known for her questionable business practices and expertise in forgeries. She seeks financial gain through various ventures within the antiques domain.

Samantha's business and romantic partner, characterized by his imposing presence and practical approach. He collaborates with the Thursday Murder Club toward certain goals.

A professor of historical archaeology at the University of Kent, who shares connections with the antiques world. Her expertise is frequently consulted by friends and colleagues.

Nina's professional superior at the university, recognized for his knowledge in identifying art forgeries. He assists with research and verification of historical artifacts.