Unforgotten (Seasons 1–6)

Unforgotten (2015) is a British crime drama from ITV you can watch online on iFILM. DS Cassie Stuart (Nicola Walker) and DS Sunny Khan (Sanjeev Bhaskar) work cold cases — crimes committed years or decades ago, whose evidence surfaces by accident. A skeleton under a motorway. Bones sealed into a building renovation. Each discovery unravels the present lives of people who thought the past was safely buried.

What separates the show from standard procedurals is the double focus: the audience meets the suspects from episode one, so tension comes not from whodunit but from watching ordinary lives fracture under scrutiny. Nicola Walker carries the whole thing; her Cassie is methodical and human in equal measure, and her scenes are worth the price of admission on their own. Each season tells a complete standalone story, so you can jump in anywhere.

Created by screenwriter Chris Lang, the series runs on ITV with a rotating cast of guest performers — Tom Courtenay, Peter Egan, and Bernard Hill have all appeared across the seasons. It is the kind of crime show that lingers, not because of the plot twist but because of what the crime did to everyone around it. Stream all seasons of Unforgotten online on iFILM.