Casal de ingleses tem sua filha sequestrada após um agente secreto lhes contar, instantes antes de morrer, sobre um plano contra um importante diplomata inglês. Em Londres, os dois tentam resgatar sua filha, ao mesmo tempo em que devem dizer o que sabem as autoridades. Foi refilmado em 1956 pelo próprio Alfred Hitchcock.
Old Jerusalem: Matathias, spiteful over his lover's illness, spits on Jesus along the road to Calvary, and is cursed to live endlessly until His return. The Crusades, 1150: Matathias, now an anonymous knight, competes for glory in combat and for the wife of a soldier. Palermo, 1290: Matteos Battadios witnesses the death of his young son, leading to conflict with his wife over whether to take comfort in Christianity. Seville, 1560: Dr Matteos Battadios dedicates himself to the treatment and comfort of the poor, but his life and work are endangered by the arrival of the Spanish Inquisition.
In London a young lady meets a homeless and apparently penniless Russian prince. She introduces him to her middle-class Fulham family and he moves in. It turns out he still has a number of diamonds given him by the last czar, and he is persuaded to start selling them. The resulting money, and his princely notoriety, soon cause changes in everyone's lives.