REVIEW: ‘Dept. Q’ Is The Most Compelling Mystery Of The Year

Dept. Q may not boast the flashiest marketing or a sprawling budget, but this grounded and tightly written investigative drama is one of the most compelling series on the platform this year. Created by Scott Frank (The Queen’s Gambit, Godless) and Chandni Lakhani (Black Mirror, Vigil), Dept. Q is adapted from the bestselling Danish crime novels by Jussi Adler-Olsen. The result is a slow-burning, atmospheric series with enough depth, twists, and character tension to keep genre fans glued to the screen—and eagerly anticipating more.

It stars Matthew Goode, Kate Dickie, Alexej Manolov, Chloe Pirrie, Leah Byrne and Kelly Macdonald. It follows Carl Morck, who is exiled to the basement as the sole member of Dept Q (a token cold case unit meant to distract from a failing police force), as he investigates a missing persons case. Though the series is primarily an investigative thriller, the relationships within Dept. Q offer just as much intrigue as the cases themselves. It’s a rare show that knows how to balance tone — grim and intense, yet laced with dry humor and surprisingly emotional beats.

Leah Byrne in Dept Q © Netflix

At the heart of Dept. Q is DCI Carl Morck, played with a perfect blend of arrogance and pain by Matthew Goode. He’s gruff, difficult, and entirely captivating, anchoring the series with gravitas. While Goode is the standout, he’s surrounded by an excellent supporting cast. Alexei Manolov is a revelation as a character who initially seems secondary but quickly proves essential — his chemistry with Goode and the rest of the team is one of the show’s best assets. Their dynamics are sharp, often funny, and help provide the levity needed in such a dark and complex narrative.

Scott Frank, who directs all episodes, once again proves why he’s one of Netflix’s most reliable storytellers. His grip on tone, pacing, and tension is exceptional. Each episode ends on a tantalizing cliffhanger, making Dept. Q incredibly bingeable. The central mystery is deliciously layered and filled with misdirection, making it nearly impossible to predict what’s coming next. Just when you think you’ve figured things out, the show pulls the rug out from under you with a twist that’s both earned and surprising.

Matthew Goode in Dept Q © Netflix

If there’s one gripe, it’s the underuse of Kelly Macdonald. A performer of her caliber deserved more screentime, and several of the subplots she’s involved in feel like distractions rather than enhancements. The show occasionally veers into unnecessary tangents, and there are moments where its limited budget becomes noticeable. That said, these are small complaints in the grand scheme. On the other hand, the score is haunting, the editing is tight, and the overall direction is extremely confident.

Dept. Q isn’t built on spectacle but it’s a show built on strong writing, rich characters, and a mystery that respects its audience. There’s a clear roadmap for the series to grow, both in scale and ambition, and if Netflix gives it the runway, this could become one of the streamer’s prestige staples. This one is a surprise gem that deserves a wide audience, and possibly a few Emmy nods too. Here’s hoping Netflix gives this cold case unit many more mysteries to solve.

Rating: ★★★★½

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© Netflix

About Dept Q

Premiere Date: May 29, 2025

Writer: Scott Frank, Chandni Lakhani

Director: Scott Frank

Production: Left Bank Pictures, Sony Pictures Television

Distribution: Netflix

Cast: Matthew Goode, Kate Dickie, Alexej Manolov, Chloe Pirrie, Leah Byrne and Kelly Macdonald.

Synopsis: DCI Carl Morck is a brilliant cop but a terrible colleague. His razor-sharp sarcasm has made him no friends in the Edinburgh police.  After a shooting that leaves a young pc dead, and his partner paralysed, he finds himself exiled to the basement and the sole member of Department Q; a newly formed cold case unit. The department is a PR stunt, there to distract the public from the failures of an under-resourced, failing police force that is glad to see the back of him. But more by accident than design, Carl starts to build a gang of waifs and strays who have everything to prove. So, when the stone-cold trail of a prominent civil servant who disappeared several years ago starts to heat up, Carl is back doing what he does best - rattling cages and refusing to take no for an answer.