Curated and verified by British TV Hub · Streaming availability checked September 2026
These shows build one long, serialized story rather than solving a fresh case every episode, and they lean into psychological weight and moral complexity rather than the tidy comfort of a cozy mystery.
Six of these seven shows live on BritBox, with Unforgotten on PBS Masterpiece.
These shows are built around long-form, serialized storytelling rather than a self-contained case each episode, and they lean into psychological weight and moral complexity rather than puzzle-solving comfort.
Line of Duty, Happy Valley, Shetland, Vera, Blue Lights, and Trigger Point are all available on BritBox in the US. Unforgotten streams on PBS Masterpiece.
Line of Duty absolutely must be watched in order, since it builds one continuous story. Unforgotten, Happy Valley, Shetland, and Vera can mostly be watched out of order, since each series or case is largely self-contained, though watching in order adds context.
Trigger Point is a natural next stop, since it comes from the same production company and stars Line of Duty's Vicky McClure. Happy Valley offers a similarly intense, character-driven kind of crime drama.
Yes, on Ann Cleeves' Shetland novels, though the show has diverged from them substantially over its run. See the Shetland reading guide for the full list.
Affiliate disclosure: British TV Hub is a participant in the Amazon Associates program and earns from qualifying purchases. Some links on this page may be affiliate links to BritBox. This never affects the recommendations — these are genuine editorial favourites.
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