It is 1970, there is World Cup and General Election fever. Marco, a wealthy Italian, has come to England to discover his true identity. Carl, a student, is torn between canvassing for the Labour party, watching the World Cup or going on a walking holiday with his girlfriend Ellie. Their paths cross in Preston library and the three take an epic journey across the Pennines.

Dramatisation of the true story of the notorious 'acid bath murderer' John Haigh, who murdered women and disposed of their bodies in vats of acid in the 1940s. He was only caught when the gallstones of one of his victims failed to dissolve in the acid and were detected by the pathologist who examined the residue from the acid bath.