The writers (led by David Kane) pull off a neat trick. For forty minutes, all evidence points to Sally McColl (a standout guest turn by Anneika Rose), the prison nurse who befriended Malone. Her alibi crumbles; her laptop contains searches for untraceable poisons. Tosh pushes for arrest.
Meanwhile, Duncan’s (Mark Bonnar) subplot regarding the stolen boat money might feel like padding, but it serves a purpose: it shows how ordinary lies metastasize. By episode’s end, Duncan’s small betrayal forces Perez to lie to a witness—a professional sin that will surely return. shetland s04 r5
By the final shot—Perez staring out at the North Sea, Malone’s file in his hand, unclosed—you realize the real crime isn’t the murder. It’s the system that made the murder feel inevitable. The writers (led by David Kane) pull off a neat trick
The episode opens not with action, but with the haunting stillness of a Lerwick dawn. Cinematographer Simon Miller continues his masterclass in atmosphere: the grey, pregnant sky hangs over the peat-stained water like a held breath. It’s a visual metaphor for the community itself—clenched, waiting. Tosh pushes for arrest
But Perez, in a moment of quiet genius, asks: “Why would a nurse, trained to save lives, leave a murder scene looking like a frantic amateur?”
The reveal, while emotionally devastating, arrives via a piece of exposition that feels slightly rushed—a sudden memory from a minor character that unlocks everything. Given the show’s usual patient unspooling of clues, this moment clunks. It’s the episode’s only misstep, but it’s a noticeable one.
If the first four episodes of Shetland ’s fourth series built the fire, Episode 5 is the explosion. With the murder of Thomas Malone—a convicted child killer living under a protected identity—DI Jimmy Perez (Douglas Henshall) finds himself not just solving a death, but navigating a moral maze where every suspect has a justifiable reason to hate the victim.