The competition is on as Heir Hunters endeavour to crack a new treasury case before a rival firm gets there first. With family lines leading nowhere, the team's research takes an interesting tack when records lead to India and the family of a colonel in the British Raj. In London, another team attempts to crack a case that has gathered dust on the Bona Vacantia list for almost six years. Missing records and persecution lead to London's Jewish quarter in the early 1900s and the tale of a family separated. A surprised heir discovers a hidden secret about an uncle and learns how personal family letters were used to prove the case to the government.