The Short Answer
- Line of Duty — meticulous, interrogation-room-driven investigations with the same patient procedural detail. (BritBox)
- Happy Valley — a detective's own life tangles with her casework in the same character-first way. (BritBox)
- Broadchurch — one case unravels an entire town's secrets, with a similar ensemble-of-suspects structure. (PBS Masterpiece)
- Karen Pirie — a cold-case specialist reopening decades-old murders with the same patient digging into buried histories. (BritBox)
- Vera — a gruff, brilliant detective who reads people's hidden histories the way Cassie and Sunny do. (BritBox)
- Shetland — atmospheric, slow-burn investigations that trust the audience to sit with a case. (BritBox)
- The Fall — a psychologically attentive Belfast investigation, following detective and suspect in equal depth. (BritBox)
- Bloodlands — a detective's own past resurfaces inside a present-day cold case. (Acorn TV)
Streaming availability may change — check BritBox, Acorn TV, PBS Passport, or Prime Video for current availability.
Line of Duty
Line of Duty
Jed Mercurio's anti-corruption unit builds its cases through meticulous, interrogation-room tension rather than action — the same patient, procedural commitment that defines Unforgotten's squad-room scenes.
Happy Valley
Happy Valley
Sarah Lancashire's Yorkshire police sergeant lets her own life tangle with her casework in the same character-first way Cassie and Sunny's investigations always circle back to their own histories.
Broadchurch
Broadchurch
A single murder unravels an entire coastal town's secrets, one resident at a time — the same ensemble-of-suspects structure that gives Unforgotten's cast of ordinary people so much weight.
Karen Pirie
Karen Pirie
The closest match here by format — a young, underestimated cold-case detective reopening decades-old murders with the same patient, empathetic digging into buried histories that defines Unforgotten.
Vera
Vera
Ann Cleeves' gruff, brilliant DCI Vera Stanhope reads people's hidden histories with the same instinct that makes Cassie and Sunny's interviews so quietly compelling.
Shetland
Shetland
Atmospheric, slow-burn investigations that trust the audience to sit with a case rather than rushing to the next twist — the same unhurried confidence Unforgotten built its reputation on.
The Fall
The Fall
Gillian Anderson's Belfast investigation follows detective and suspect in equal, psychologically attentive depth — a darker cousin to Unforgotten's patient attention to every side of a case.
Bloodlands
Bloodlands
A Northern Irish detective's own past resurfaces inside a present-day cold case, echoing Unforgotten's blend of current investigation and long-buried history.
This one's ended — see what to watch next.
