Mrs Wilson: Trailer, certificate and where to watch

Gripping true tale of a widow who uncovers her late husband's secret life

Year: 2018

Certificate: 12

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Ruth Wilson plays her own grandmother Alison in this gripping three-parter - an incredible true story that could have been sensational were it not handled with such sophistication and an air of dark mystery, with Mrs Wilson as an amateur sleuth using her skill, rigour and resilience to find the sinister truth at her own family's heart.

It opens in 1963 with the death of Alison's husband Alec (Iain Glen) and we follow her grief as she reflects on her life with Alec. All it takes is a knock at the door and Alison's world comes crashing down and the slow reveal, so expertly handled, is a most unusual yet well-reasoned twist. (Three episodes)