With chilling murder cases, dark secrets and twists that keep viewers guessing, The Marnow Murders is back with another mystery to unravel. Here’s everything to know about the acclaimed German detective drama ahead of its highly anticipated return.
German crime drama The Marnow Murders has earned a reputation for keeping viewers on edge, thanks to its unsettling mysteries, complex characters and an investigation that reaches far beyond the murder scenes themselves. Now, fans have another reason to get excited: the series is returning for a second season, with a new case that promises plenty of intrigue.
Available through Channel 4’s Walter Presents collection, the five-star-rated detective drama takes viewers to Schwerin, a city in northeastern Germany, where a series of disturbing killings draws two very different detectives into a dangerous investigation. Inspired in part by real historical events, the story blends traditional police procedural elements with a darker narrative involving corruption, hidden motives and people determined to keep the truth buried.
The first series arrived on Channel 4 in 2023 and has since attracted praise from viewers for its atmospheric storytelling, strong performances and unpredictable plot. Fans looking for a crime drama with the tension and layered mysteries associated with Harlan Coben’s work may find plenty to enjoy here.
With the second series arriving on Channel 4’s streaming platform on Friday 26 June, here’s a closer look at the story, cast, viewer reception and where to watch The Marnow Murders.
What is The Marnow Murders about?
The first series unfolds during an intensely hot summer in Schwerin, a small lakeside city in northeastern Germany. The investigation begins when Alexander Beck is discovered hanging upside down in his apartment, setting off a chain of events that leads detectives towards a series of increasingly disturbing murders.
At first, the killings appear to have little in common. As the investigation progresses, however, the detectives begin searching for connections that could explain the seemingly random violence.
Leading the case are Lona Mendt, played by Petra Schmidt-Schaller, and Frank Elling, portrayed by Sascha Alexander Geršak. The two detectives have contrasting personalities and approaches to life, making their partnership an interesting dynamic at the heart of the series.
Lona is independent, reserved and emotionally distant, while Frank is a devoted family man whose personal life stands in sharp contrast to his partner’s. Despite their differences, the pair must work together to piece together the evidence, with help from junior detective Jasper, played by Anton Rubtsov.
Their investigation soon becomes more complicated. A group with connections to East Germany is determined to prevent the detectives from pursuing the case, raising questions about what the murders might expose and who stands to lose if the truth comes out.
The threats do not come from outside the investigation alone. Federal Police Investigator Bernd Peters, played by Jörg Schüttauf, is also working against Lona and Frank, attempting to bring their inquiry to a halt. With powerful interests standing in their way, the detectives must work out whom they can trust as they follow the evidence.
What happens in The Marnow Murders season 2?
The second series moves the story from the oppressive heat of summer into the bitter cold of winter, introducing another complex investigation for the detectives to confront.
This time, Lona and Frank uncover a series of sinister murders connected to a children’s home and a human trafficking ring. The case takes a devastating turn when a witness protection operation ends in bloodshed, leaving both detectives in comas.
Amid the chaos, a missing 12-year-old girl emerges as a crucial piece of the puzzle. Her disappearance could hold the key to understanding the wider conspiracy and the events surrounding the investigation.
With Lona and Frank unable to continue their work, two new detectives are brought in to take over the case. Kaminski, played by Sabrina Amali, and Dudek, played by Bernhard Conrad, must navigate a trail of erased files, concealed motives and disturbing discoveries as they attempt to uncover what really happened.
The season also introduces a parallel storyline that explores the events leading up to the present-day investigation. As this narrative develops alongside the detectives’ work, viewers gradually gain a clearer picture of the people involved and the circumstances that brought them to this point.
The combination of a missing child, a trafficking investigation, compromised evidence and a wider conspiracy gives the new series a fresh mystery while maintaining the dark, atmospheric tone that helped establish the show’s reputation.
Who stars in The Marnow Murders?
The German crime drama features an ensemble cast, with returning actors reprising their roles and new detectives joining the story in the second series.
The principal cast includes:
- Minh-Khai Phan-Thi (Doppelhaushälfte) as Bettina Meier
- Sascha Alexander Geršak (Nothing Bad Can Happen) as Frank Elling
- Anton Rubtsov (Boom Boom Bruno) as Sören Jasper
- Petra Schmidt-Schaller (Ein Schritt zum Abgrund) as Lona Mendt
- Jörg Schüttauf (Forwards Ever!) as Bernd Peters
- Peter Kremer (Siska) as Norbert Böhm
- Victoria Trauttmansdorff (Counterparts) as Dr. Iris Fichte
- Anne Schäfer (Barcelona Crime) as Susanne Elling
- Bianca Nawrath (Lost in Fuseta) as Mareike Elling
- Christine Schorn (Apprehension) as Helga Elling
- Michael Mendl (In the Shadow of Power) as Klaus-Dieter Turn
- Lutz Blochberger (Breaking Horizons) as Michael Bender
- Judith Engel (Casting) as Frauke Bender
Petra Schmidt-Schaller and Sascha Alexander Geršak remain central to the drama as Lona Mendt and Frank Elling, whose contrasting personalities and professional partnership form a key part of the first series. The arrival of Kaminski and Dudek adds another dimension to the story as the investigation takes an unexpected turn.
Is The Marnow Murders worth watching?
For viewers who enjoy dark, character-driven detective dramas, The Marnow Murders offers plenty of reasons to tune in. Its unsettling atmosphere, gruesome murder cases and shifting suspicions create a story in which the truth is rarely straightforward.
The performances have been among the elements praised by viewers, alongside the series’ unusual mysteries and carefully constructed parallel storyline. Rather than relying solely on individual murder cases, the drama gradually reveals connections between characters and events, encouraging audiences to pay attention to the details.
The twists and turns also help maintain the suspense, particularly as the investigation becomes entangled with corruption and attempts to suppress the truth. Viewers who enjoy trying to solve a mystery before the detectives do should find plenty to keep them engaged.
Some fans have even returned to watch the series again, suggesting that its layered storytelling offers more to discover beyond the first viewing.
With its combination of police investigation, personal drama and a wider historical backdrop, The Marnow Murders is a compelling option for anyone looking for their next crime drama.
How to watch The Marnow Murders
The first series of The Marnow Murders is available to stream on Channel 4.
Those who have yet to discover the drama can start with the first series to follow Lona and Frank’s original investigation before moving on to the new case.
What other detective dramas should you watch?
If The Marnow Murders leaves you wanting more dark mysteries and complicated investigations, there are other crime dramas worth adding to your watchlist.
Irvine Welsh’s Crime
Set in Edinburgh, Irvine Welsh’s Crime follows Detective Inspector Ray Lennox, played by Dougray Scott, as he investigates difficult and disturbing cases while struggling with personal demons of his own.
The series combines gritty police work with a closer look at the detective’s personal challenges, making it a strong choice for viewers who prefer crime stories that explore the people behind the investigations.
Irvine Welsh’s Crime is available to stream on ITVX.
Hellground
For another German detective drama from Walter Presents, consider Hellground.
The series follows Dr. Fabian Lambert, played by August Wittgenstein, who moves to a quiet village in Germany’s Black Forest. His arrival coincides with a series of mysterious murders, leaving questions about whether the killings are connected to his presence.
With its secluded setting and unfolding mystery, Hellground offers another atmospheric option for fans of European crime dramas.
All episodes are available to watch on Channel 4.
Whether you prefer the tangled investigations of The Marnow Murders, the personal struggles at the heart of Irvine Welsh’s Crime or the unsettling village mysteries of Hellground, there’s plenty to explore while waiting for the next twist in your favourite detective drama.