Synopsis

The investigators return to the cold case of Frederick Tully, a young wages clerk murdered at Battersea Power Station in the 1950s. Richard Dunne was executed for Tully’s crime, but his granddaughter, Hannah, is now leading a determined effort to secure a posthumous pardon. The discovery of a suitcase filled with used five-pound notes hidden in the attic of the Tully home has brought fresh details to light, suggesting a possible blackmail scheme. Tracking the origin of these notes reve