The Heir Hunters race to find heirs on one of their biggest ever cases. When a retired chambermaid with half a dozen siblings passes away leaving no will, the hunt is on to work out who might benefit. Census records provide crucial links and reveal a family history in printing in the early part of the 20th century. World War II provides the backdrop for another family tale of a Welsh dancing girl who fled Cardiff during the Blitz and moved north to Cheshire. But a mysterious name change threatens to close the case until war records provide a vital clue and the team unlocks the tragic story of a family ravaged by a killer of the time - tuberculosis.