The Vanishing Triangle (2023)

Years earlier, Lisa Wallace's mother, Janice, was murdered in their home, and young Lisa was trapped inside a wardrobe while the killer attacked her mother. Lisa survived, but the case was never solved, and the memory of it shaped her entire adult life. Years later, Lisa works as a journalist in Dublin, still carrying the trauma of what happened to her family.

In the present-day story, Lisa is pushed to write about her mother's murder as part of a new article. She publishes a piece tied to the old case, and the story puts her trauma back into public view. The article becomes linked to a new disappearance, and Lisa is drawn into the investigation when she begins receiving disturbing messages and evidence suggesting the old killer may be active again.

At the same time, Amy Reynolds has disappeared after missing her last bus home from a night out. Susan Reynolds, Amy's sister, desperately tries to get the police to take the case seriously, but the disappearance is brushed aside at first. Susan seeks out Lisa because Lisa's article has made her name visible again, and Susan hopes Lisa can help find Amy.

Lisa begins comparing Amy's disappearance with the history of her mother's murder. She learns details about Amy's last known movements and speaks to the people around her. While examining Amy's room, Lisa finds a wooden wedge in the windowsill, and Susan mentions that Amy said her red lipstick was missing. These details begin to suggest that Amy may have been targeted rather than simply gone missing. Lisa also continues receiving material that reinforces her belief that the old killer is connected to the current case.

Lisa brings what she has to the Gardaí and starts working with Detective David Burkely. David initially tries to help, but he is constrained by police politics and by pressure from above. Even so, he and Lisa continue following leads as more women disappear and the pattern becomes more frightening. Lisa's work and the investigation increasingly put her in direct danger, while her personal life is strained by the weight of the case and her past trauma.

As the search escalates, Lisa's investigation leads her toward a remote farm where the missing women are believed to be held. The situation turns violent and urgent. Brennan goes in alone while Lisa stays outside. She then hears him cry out for help and rushes into action. Brennan tells her that he has been shot and that the killer has locked him behind a door. Lisa tries to break the lock, but she cannot get the door open. The killer then appears behind her, and Lisa realizes she is facing him directly.

The confrontation at the farm becomes a fight for survival. Lisa hears Mandy screaming and manages to save Mandy and Susan from the immediate danger. The three women flee the farm together. As they escape, they run into David, who gives them the keys to his car. David has already called for backup, and the women are able to leave the farm in the car. The escape, however, is not the end of the danger.

After the others get away, David comes face to face with the masked killer. The two struggle, but the killer gains the upper hand. He fatally shoots David, then removes his mask. The killer is revealed to be Gareth Brennan. His exposure confirms the investigation's worst suspicions and connects the disappearances to the man they had been dealing with. When sirens begin to approach the farm, Gareth injures himself in the chaos and gets away from immediate capture.

In the aftermath, Lisa wakes in the hospital and learns that Susan and Mandy are safe. Amy Reynolds is still missing and is presumed dead, because she cannot be found and Brennan is believed to have killed her. Chris, who had been in critical condition and in a coma, is expected to survive. Lisa also learns enough from what happened to help potentially get Chris's charges dropped. By the end, Lisa and Chris have reconnected emotionally, and their relationship is left restored rather than destroyed.

The ending is not a neat solution. Lisa survives the final confrontation, David is killed, the masked killer is revealed to be Gareth Brennan, Susan and Mandy are rescued, and Amy remains missing, leaving the case and the larger mystery unresolved.

Scene by scene, the finale begins with Lisa trapped in a hospital bed, physically restrained and still carrying the shock of everything that has happened before this point. The story then moves to Billy Miller's deathbed, where Billy admits that he framed Chris for a murder Chris did not commit and asks Lisa for forgiveness. That confession shifts the weight of the investigation: the lie that has surrounded the case is exposed, and Chris's suffering is shown as the result of Billy's actions.

Lisa then heads back into the danger tied to the disappearance plot. She reaches the farm, where she is held, and tries to get free. She fights the killer, tries to break the lock, and when that fails, she is forced into a direct struggle for survival. She is knocked down, gets back up, and runs upstairs, showing that she is not giving in even when cornered. While moving through the house, she hears Mandy screaming and manages to save both Mandy and Susan.

As Lisa, Susan, and Mandy escape the farm, they encounter David, who gives them the keys to his car and tells them backup has already been called. The three women get away successfully. David then stays behind and faces the masked killer alone. They struggle, and the killer overpowers him. David is fatally shot, and only then does the killer remove his mask and reveal himself as Gareth Brennan.

After the reveal, Gareth is injured when he hears sirens approaching the farm. The story does not show him being arrested, and his escape leaves the threat hanging over the wider world of the series. In the final aftermath, Lisa wakes up in the hospital and finds Susan and Mandy alive and safe. Amy, however, has not been found, and the series treats her fate as grim and unresolved, with the implication that Brennan killed her. Chris's situation also improves: the finale says he will be alright, and Lisa now has enough information that his charges may be dropped. The last emotional note is that Lisa and Chris have rediscovered their love for each other and may be able to stay together and care for one another after all.

There is no reliable indication that The Vanishing Triangle has a post-credit scene. The available episode and series descriptions instead describe the six-part story as ending abruptly or without a postscript, which points to a straightforward ending rather than a hidden extra scene after the credits.

So, based on the sources available, the answer is no known post-credit scene.

Lisa Wallace publishes the article as part of her work as an investigative journalist, and the story says that this act causes a killer to resurface and girls to begin disappearing again. The series frames her article as the inciting event that pulls her directly into the new wave of abductions.

Detective David Burkely is the police investigator who joins forces with Lisa after the disappearances begin. The series follows the two of them working together across Ireland while the killer continues to taunt Lisa.

The missing girls are the central mystery of the series, with the plot driven by a string of disappearances that begin after Lisa's article is published. The official description says Lisa and David investigate across Ireland as they try to rescue the killer's latest victims.

The killer is described as resurfacing after Lisa's article and actively taunting her as the investigation unfolds. The series presents him as the force behind the renewed disappearances and as a direct threat to Lisa herself.

The episode guide indicates that Lisa must make a tough decision later in the series, showing that her storyline is not only about reporting and investigation but also about a personal moral or emotional choice. The available descriptions do not specify the exact decision, but they make clear that it is a key turn in her character arc.

No, it is not especially family friendly. It is a crime thriller about disappearances and murder, with material that is more suited to teens and adults than younger children.

Potentially objectionable or upsetting elements include: - Violence and gore: IMDb rates the series as moderate for violence and gore. - Strong language: IMDb rates profanity as severe, noting that F-words are very common. - Frightening/intense scenes: IMDb rates these as moderate, which suggests suspenseful, tense, and disturbing moments. - Alcohol/drug/smoking content: IMDb rates this as moderate. - Threats and abduction-related material: The series centers on disappearances of young women and a killer's return, which may be disturbing even without explicit detail.

It appears to have no sex/nudity listed in IMDb's parental guide, but the overall tone is still dark and potentially upsetting for children or sensitive viewers.