Nightsleeper – Out of Control, the review: a railway thriller that stays on track with tension

The plot of Nightsleeper - Out of Control: a cyberattack turns the journey into a nightmare

Stories set on a train have always had a particular charm. The confined space, the impossibility of getting off, and the constant feeling of being at the mercy of events are perfect ingredients for building a thriller capable of maintaining high tension. Nightsleeper – Out of Control (from September 4th exclusively on Sky and streaming on NOW) starts precisely from this idea, but updates it to the present day, replacing classic sabotage with a much more current threat: a cyberattack that transforms a normal overnight journey from Glasgow to London into a desperate race against time. As the convoy continues its unstoppable march, passengers find themselves trapped in an increasingly unpredictable situation. Trying to prevent the worst are a police officer on the train and a cybersecurity expert operating from the outside, forced to collaborate to stop whoever is pulling the strings of a plan as ambitious as it is lethal. It is from this premise that a series takes shape, betting everything on pace, suspense, and a constant sense of danger, seeking to transform a simple overnight journey into a tension-filled experience. 

A premise like that of Nightsleeper – Out of Control only works if the viewer can believe in the characters experiencing it, and in this respect, the series hits the mark. The credit goes primarily to Joe Cole (Peaky Blinders, Gangs of London), who plays Joe Roag with an intensity that is never over the top. His is not the classic action hero figure: he is an imperfect man, often forced to improvise and live with the weight of his decisions. Cole manages to convey this humanity with great naturalness, becoming the emotional glue of the entire narrative.

Alongside him, Alexandra Roach (Utopia, No Offence) plays Abby Aysgarth, an analyst at the National Cyber Security Centre. Her character represents the ideal counterpoint to Joe's: rational, methodical, and forced to fight the same battle without being physically at the scene of the emergency. The relationship between the two, built almost exclusively through radio and digital communications, avoids unnecessary forcing and grows with each passing episode, creating a credible dynamic that sustains much of the narrative tension.

A solid and credible cast

The supporting cast proves equally solid. David Threlfall (Shameless) lends authority to his character, while Alex Ferns (Andor, The Batman) brings his usual stage presence, made of determination and charisma. Even Katie Leung (Harry Potter) manages to carve out a significant space, helping to add depth to a group of characters who, despite having limited screen time, never end up seeming like mere fillers. It is precisely this ensemble that makes the train feel like a truly lived-in place, populated by individuals with different fears, reactions, and motivations. 

The direction also plays a fundamental role in maintaining the series' quality. Jamie Magnus Stone (Doctor Who) and John Hayes (Dublin Murders) understand from the outset that the true strength of the story lies not in spectacular action, but in constant tension. For this reason, they choose an essential staging, made of close-ups, never excessive camera movements, and an intelligent use of the train's cramped spaces, which amplify the sense of isolation and danger.

The editing is also very effective, precisely alternating events on the train with operations coordinated from the outside without breaking the rhythm. Each change of perspective adds new information or increases pressure on the protagonists, preventing the narrative from losing its grip. While moving within schemes already known to contemporary thrillers, the direction demonstrates personality and awareness, preferring the construction of suspense over easy plot twists. A choice that allows the series to maintain high tension practically until the end credits. 

Nightsleeper – Out of Control builds its identity on a constant pace, leaving little room for pauses and making each episode feel like a continuous race against time. It's an approach that works, especially because it manages to maintain high suspense without ever giving the impression of slowing down.

Naturally, not everything runs perfectly. Some narrative twists appear far too convenient, and on more than one occasion, the script prioritizes surprise over the coherence of events. These are details that genre enthusiasts will easily notice, but they hardly compromise overall engagement. The series prefers to focus on emotional impact and a sense of urgency rather than an impeccable reconstruction of every situation.