It's Christmas at London's Theatre Royale and journalist Daphne King is determined to solve an extraordinary mystery...

December 1935. Director Chester Harrison's production of A Christmas Carol has had a troubled run on its tour of regional theatres. With tensions amongst the cast running high, the company reach their final stop - London's Theatre Royale - a few days before Christmas.

Catastrophe, however, strikes on opening night: 'Scrooge' dies on stage, seemingly due to a heart attack. But the show must go on. Until, that is, an old rival of Chester's is murdered in a dressing room. Are those associated with the production being picked off one by one? Journalist Daphne King is determined to reveal the truth...