The gifted writer-director Stefan Golaszewski (Him and Her, Mum) has surpassed himself with his latest drama series, Marriage. Given hour-long episodes to play with, rather than the usual half-hour, he has created an unfeasibly rich four-parter out of the simplest of means.

Connoisseurs of the Britbox streaming service may already have caught up with this three-part series, which has evidently been pressed into service on ITV to pad out TV’s annual summer slump. They could have called it Midsomer Murders Goes to the Côte d’Azur, as it details the adventures of Investigating Judge Antoine Verlaque (Roger Allam) and his partner Marine Bonnet, a criminal psychologist played by Nancy Carroll.

In the middle of a pavement-cracking, railway-melting heatwave, what could be more refreshing than a visit to the bleak but bracing landscapes of the Faroe Islands? This 18-island archipelago midway between Norway and Iceland is where BBC Four’s latest Nordic drama is situated, and its themes of murder, conspiracy and ecological awareness strike a topical note. 

As the world lurches ever deeper into multiple manifestations of chaos, writer-director Peter Kosminsky’s new drama about cyber-warfare taps into the prevailing climate of unease. Based around the top secret operations of GCHQ at Cheltenham, it takes us backstage as the UK is struck by a crippling cyber attack which brings airports, cashpoint machines, email servers and online shopping to a screeching halt.

Suspect has a simple premise: a detective goes on a routine visit to a mortuary where an unidentified young woman has been taken after being found hanged. Suicide is the initial judgment: the cop, Danny Frater (James Nesbitt), grills the pathologist (Joely Richardson, pictured below) about the case and starts to leave. Then he pauses, policing instincts a-twitch, and uncovers the body’s head.

Renowned for an impressive body of work that includes This House, Quiz and Brexit: The Uncivil War, playwright and screenwriter James Graham has looked inwards and backwards for his new six-part series Sherwood.

Has there ever been a smarter television series than DR’s Borgen? It’s regularly compared to The West Wing for its twisty interrogation of government shenanigans – and certainly it pays to get to grips with the coalition-driven political scene at the Castle, seat of the Danish government, just as it did with Aaron Sorkin’s take on the Hill. 

It has been 14 years since The Wire, David Simon’s labyrinthine epic about crime and policing in Baltimore, reached the end of the line. Yet it seems he couldn’t let it lie, because he’s back on the Baltimore beat with We Own This City (made by HBO, showing on Sky Atlantic). This time, the series is based on the eponymous non-fiction book by Baltimore Sun reporter Justin Fenton, with crime novelist George Pelecanos sharing the “Creator” credit with Simon.

The challenge for the makers of Das Boot is to keep finding new ways to move the show forwards and outwards without losing touch with its foundations in World War Two submarine warfare.

Sarah Perry’s 2016 bestseller The Essex Serpent has been described as “a novel of ideas”, which almost sounds like a warning to anybody wanting to televise it. Happily, director Clio Barnard and screenwriter Anna Symon picked up the gauntlet, and have wrought a kind of contemplative television in which the story’s historical and philosophical preoccupations are expressed through landscape and imagery as much as dialogue and action.