Olive Heriot and Hugh Manning had been in love for years, but marriage had been out of the question because of the intervention of Olive’s mother. Now, at last, she was of age and due to gain her inheritance and be free to choose. A dinner party had been arranged at the Heriot’s home, ‘The Hermitage’ and Hugh expects to be able to announce their engagement. Things start to change after a gruesomely realistic game entitled ‘murder’, which relies on someone drawing the Knave of Spades after cards are dealt. Tragedy strikes and other relationships are tested and consummated - but is this all real, or imagined? When a pregnant girl was found dead in a lonely moorland home. The gouse party reached its own verdict. Oblivious to her family's secret past, Olive Heriot escapes her country mansion to experience bohemian life in London. But when she meets charming Garry Links, heir to a vast fortune, everything changes...