Bethany Waites holds a bullet with her friend's name scratched on it and contacts Mike before heading to a dangerous meeting.

Joyce arranges for Ron to be interviewed on South East Tonight, hoping to use Mike as a source on Bethany's disappearance.

Over dinner, Mike reveals that Bethany received anonymous threatening notes at work and had recently discovered something new about her VAT story.

Elizabeth and Stephen are kidnapped and wake up handcuffed and blindfolded inside a moving van, holding hands in the dark.

Ibrahim visits Connie in Darwell Prison and asks her to gather information from fellow inmate Heather Garbutt about Bethany's murder.

The Viking holds Elizabeth and Stephen in his library and threatens to kill Joyce if Elizabeth refuses to assassinate Viktor.

Chris and Donna trace Bethany's route and discover she drove through the underground car park of Juniper Court on the night she disappeared.

Heather Garbutt is found dead in her prison cell with a note suggesting she was murdered rather than having died by suicide.

Elizabeth and Joyce arrive at Viktor's London penthouse, and Elizabeth pulls out a gun and orders him to sit down.

Elizabeth shoots the ceiling instead of Viktor, and Bogdan smuggles Viktor out of the building hidden inside a large body bag.

The Viking visits Viktor's apartment, finds the bullet hole in the ceiling rather than the wall, and realizes Viktor is still alive.

Jack Mason tells Ron and Viktor that Bethany was not in the car when it went off the cliff and reveals his partner framed Heather.

Joyce drugs the Viking with one of Viktor's sleeping pills hidden in a mug of tea when he arrives at her flat to kill her.

Stephen reveals that the Viking's name is Henrik Hansen, a cryptocurrency figure, forcing Henrik to abandon his murder plans and cooperate.

Andrew confesses to running the VAT fraud and to killing Bethany during a staged meeting secretly livestreamed on Fiona's Instagram.

The Thursday Murder Club takes on the cold case of Bethany Waites, a journalist presumed dead after her car was found below Shakespeare's Cliff. While the club works to identify who in the VAT fraud scheme killed her, Elizabeth and Stephen are kidnapped by a man they call the Viking, who demands Elizabeth kill a former KGB agent named Viktor or he will murder Joyce. Elizabeth outmaneuvers the Viking by faking Viktor's death and recruiting him as an ally, and Joyce herself incapacitates the Viking when he comes to kill her. With the Viking neutralized, the full group closes in on the true mastermind behind the fraud and Bethany's disappearance. A carefully staged confession livestreamed on social media finally forces the culprit to reveal himself, bringing both mysteries to a head.

The headline events driving both murder investigations from start to finish.

Pauline meets Ron while doing his makeup before the South East Tonight segment, and the two immediately flirt.

Donna and Bogdan talk through how to commit the perfect murder on a date, and both agree they want to meet again.

During a visit to Elizabeth and Stephen's home, Stephen fails to recognize Joyce, betraying to her how severely his dementia has progressed.

After being released in the woods, Elizabeth finds a phone box and calls Bogdan, asking him to bring tea and a gun.

Connie visits Heather in her prison cell and slowly earns her cooperation by offering gifts and leveraging her VIP prison status.

Joanna and her colleague Cornelius present their VAT fraud findings to the club over Zoom, linking Jack Mason, Carron Whitehead, and Robert Brown.

Ron meets Jack Mason for a game of snooker and Jack says he is certain Bethany is dead, despite no body ever being found.

Andrew arranges a book reading at the Coopers Chase Literary Society as a pretext to question Ibrahim about his visit to Connie.

Andrew confronts Ibrahim about visiting Connie in prison, but Ibrahim refuses to break patient confidentiality and threatens to go to the press.

Connie searches Heather's cell after her death and finds hidden writings stuffed inside the hollow leg of the bed frame.

The Thursday Murder Club stages Viktor in a shallow grave so Bogdan and Pauline can photograph him appearing convincingly dead.

Ibrahim and Ron's young grandson Kendrick work through Heather's writings together and determine that the note and the poem were written by two different people.

Donna tells Bogdan she is officially his girlfriend, and he is visibly delighted that their relationship has a name.

Chris and Donna arrive at Jack Mason's house to arrest him and find him dead inside, his death staged to look like a suicide.

Patrice suggests Andrew's DNA would be on the medal pouch he handled, which proves to be the evidence linking him to Jack's murder.

Running parallel to the main investigation, a web of relationships and secondary discoveries steadily builds toward the truth. Ron begins dating Pauline, Donna and Bogdan grow closer, and the club uses every connection at their disposal to unpick the fraud. Key discoveries come through unlikely channels: a prison meeting, a Zoom call with Joyce's daughter, and a chat over snooker all yield crucial clues. The group stages elaborate deceptions, examines handwriting, and follows threads that eventually converge on the same criminal. The investigation reaches its resolution when physical evidence collected at a medal ceremony links the antagonist conclusively to murder, and the loose ends of both cases are finally tied off.

The supporting scenes and relationships that fill out the investigation's full arc.

Joyce suggests to the Thursday Murder Club that their next case should be the unsolved disappearance of journalist Bethany Waites.

Elizabeth is struck from behind during her daily walk with Stephen, revealing that her threatening texts have escalated to a genuine physical danger.

Connie tells Ibrahim she plans to kill Ron and Bogdan upon her release, and he agrees to become her prison psychiatrist.

Viktor receives an alert at a secret email address no one should know, with two photographs attached, warning him that someone wants him dead.

Connie replaces Heather's genuine suicide note with a forged one, making her death appear to be a murder to serve her own future plans.

Elizabeth reveals to Joyce on the train to London that she was kidnapped and intends to kill Viktor using the gun Bogdan provided.

Joyce and Elizabeth attend a Stop the Clock filming, and Elizabeth fakes a fainting spell to get backstage and confront host Fiona privately.

Fiona reveals she received threatening notes just as Bethany did and suggests the club look into a producer named Carwyn.

Elizabeth visits Andrew posing as a literary agent, exchanging VAT fraud information for his help arranging a police search of Heather's garden.

Ibrahim realizes that the VAT fraud name Carron Whitehead is an anagram of Catherine Howard, the protagonist of Andrew's detective novels.

Donna catches producer Carwyn slipping a threatening note into her bag at the television studio, exposing him as the long-anonymous harasser.

At the Shakespeare's Cliff memorial, Ron suddenly connects the pseudonym Robert Brown MSc to the brand of mascara Pauline always uses.

Pauline confesses to Ron that she disguised Bethany with a wig and makeup the night she disappeared and helped her fake her own death.

Bethany, living under the false name Alice Cooper in Dubai, watches the livestream of Andrew's confession go viral from her new life abroad.

Mike discovers he has received the same anonymous image of a red rose every year on the anniversary of Bethany's disappearance and wonders if she is alive.

Beneath the surface of the investigation runs a current of pivotal moments where the story pivots on a single revelation or choice. The club's involvement begins with Joyce's quiet suggestion and accelerates as hidden dangers, secret identities, and buried truths come to light one by one. Characters make decisions that carry enormous consequences: Elizabeth choosing to protect Joyce by deceiving her, Connie secretly manipulating evidence to serve her own ends, and Pauline finally telling Ron the truth she has kept for years. The unmasking of the anonymous note-sender and the discovery of where Bethany actually is bring both mysteries to their emotional close. The novel ends not with a dramatic arrest but with the quieter, more poignant revelation that a missing friend may still be alive.