'Dept Q.' Ending Explained: Who Kidnapped Merritt and Who Shot Hardy?

Editor’s Note: The following contains spoilers for Debt. Q Season 1.

Netflix’s new hit series Dept. Q, the latest from The Queen’s Gambit creator Scott Frank, centers on DCI Carl Morck (Matthew Goode), a brilliant but emotionally scarred detective assigned to lead a newly formed cold case unit. Tasked with reviving long-forgotten investigations, Morck teams up with a small, unlikely team to take on their first case: the mysterious disappearance of prosecutor Merritt Lingard (Chloe Pirrie), who vanished without a trace four years earlier. Throughout the series, viewers know Merritt is alive and being held somewhere against her will, but the identity and motive of her captors remain a chilling mystery.

As the nine-episode season builds to its finale, Morck and his team finally begin to close in on Merritt’s location. But what they uncover is darker and more personal than they could have imagined. At the same time, another investigation looms: the unsolved Leith Park shooting, which left Morck injured and his longtime partner, Hardy (Jamie Sives), paralyzed. As both storylines converge, Dept. Q delivers a finale that highlights the show’s ability to weave shocking plot twists into grounded, emotionally rich character arcs.

Merritt’s Kidnapping is Personal, Not Professional in ‘Dept. Q’

Image via Netflix

While Merritt spends much of her four years in captivity trying to piece together which enemy from her prosecuting career might be responsible for her abduction, the truth lies much deeper in her past. It turns out that she was kidnapped by Ailsa Jennings and her son, Lyle, who blame her for the death of Lyle’s older brother, Harry. Through flashbacks, we learn that, as teenagers, Merritt and Harry were in a secret relationship and planned to run away together. Merritt convinced him to help her steal jewelry from her family’s home, but the plan went horribly wrong when Harry was caught and died while fleeing the police.

Decades later, Ailsa still blames Merritt for Harry’s death. In a long-delayed act of vengeance, she and Lyle imprison Merritt in the hyperbaric chamber, hoping to break her down and force her to admit guilt. But, there’s an even darker twist when Merritt discovers that the man she had been seeing just before her disappearance, a journalist named Sam Haig, was actually Lyle. By impersonating the real Sam, Lyle gained her trust and used it to orchestrate her kidnapping. Just as these horrifying truths come to light, Carl and Akram (Alexej Manvelov) close in on Merritt’s location, setting the stage for a tense and emotional rescue.

DCI Morck and His Team Work Together to Rescue Merritt

Thanks to sharp detective work from Rose (Leah Byrne), Carl and Akram trace Merritt’s whereabouts to an abandoned warehouse owned by Shorebird Ocean Systems. They realize the hyperbaric chamber inside, once used as a form of punishment by Ailsa Jennings on her sons, is the likely place where Merritt has been held all these years. With time running out, Carl and Akram race to the warehouse, knowing that any sudden release from the pressurized chamber could be fatal for Merritt.

As they work to stabilize the environment and get her out safely, Lyle is there with a shotgun and fires at them. In a tense moment that mirrors the show’s opening scene, a bullet passes through Carl and hits Akram in the shoulder. But unlike the Leith Park shooting, this time the outcome is different. Akram, wounded but alert, manages to fight back, killing Lyle and saving both Carl and Merritt. In the aftermath, Merritt is finally airlifted to safety and reunited with her brother William (Tom Bulpett) in a powerful, emotional moment that brings long-awaited closure to their story.

Matthew Goode as DCI Carl Morck looking serious with a mustache and beard in Dept. Q

“I Do Have the Story in Mind for Next Season”: Matthew Goode and Creator Scott Frank Break Down the ‘Dept. Q’ Finale and Their Hopes for Season 2

“If we do get to go again, and there’s nothing greenlit yet at all, that would be very exciting,” says Goode about a possible Season 2 of ‘Dept. Q.’

Questions Still Linger About Who Shot Hardy and Morck In the Season Finale

While Merritt’s case is brought to a close, the question of who shot Carl and Hardy and killed rookie officer PC Anderson remains unresolved. Throughout the season, Morck grapples with PTSD, struggling to cope with both physical trauma and emotional fallout. Although he regularly meets with Dr. Rachel Irving (Kelly Macdonald), the therapy sessions offer little relief. In the background of the Lingard investigation, Morck quietly works to piece together his own theory, frustrated by the lack of progress from the official inquiry. At one point, he even dreams that the shooting was orchestrated by Leith Park’s criminal kingpin, Eugene Errington, perhaps hinting at who he believes is behind the shooting.

There’s also growing suspicion around PC Anderson himself. Morck begins to suspect that Anderson may have been corrupt and was actually the one who stabbed the victim at the original crime scene, then staged it to look like something else. When Hardy and Morck arrived, Anderson claimed the victim’s daughter called it in, but Morck discovered that the man didn’t have a daughter. Using his instincts and investigative skills, Morck realizes that Anderson wasn’t as clueless as he pretended to be, and may have played a much bigger role in what happened that day.

After a three-month time jump, the case still remains unsolved. In one of the final scenes of the series, Moira (Kate Dickie), Morck’s commanding officer at the station, looks over the case file. When Hardy arrives at the station on his crutches, she pulls him aside and tells him she wants him to look at something alone. It’s unclear what she’s referring to, but it strongly suggests there’s more to the shooting than anyone has admitted, and that Hardy may play a key role in uncovering the truth. For a series built on twists and institutional corruption, it’s a promising setup for a new dynamic between Morck and Hardy in Season 2.

Carl and Merritt Meet (Sort of) in the Season Finale of ‘Dept. Q’

Matthew Good as Carl Morck in Dept Q — Image via Netflix

In the same three-month time jump, Merritt arrives at the police station looking healthy and fully recovered, ready to personally thank the team that saved her life. She asks to speak with Carl, but Moira tells her he’s taking some much-needed time off. Curious, Merritt makes her way down to the basement headquarters of Department Q, where she finds the case board assembled during the investigation into her disappearance. She’s visibly moved by the level of detail and care that went into the effort to find her. As she prepares to leave the station, she nearly bumps into Carl at the elevators. He doesn’t say a word, and she doesn’t recognize him.

While this moment could have been played as an emotionally charged reunion, its restraint makes it even more effective. Carl, who rarely smiles throughout the series, offers the slightest trace of one here. Seeing Merritt alive and well is enough for him. He quietly turns and heads into the elevator and down to the basement, ready to get back to work. One by one, the rest of the team arrives, including Hardy, as they prepare to take on their next cold case.

There’s been no official word yet on a second season of Dept. Q, but given the show’s immediate success and the fact that it’s based on a popular series of Nordic noir novels by Jussi Adler-Olsen, it seems all but certain. As Carl, Akram, Rose, and a steadily recovering Hardy return to their basement office, one thing is clear: there are plenty more mysteries waiting to be solved.

Season 1 of Dept. Q is available to stream on Netflix.