Outside a London theatre a throng of people wait expectantly for the last performance of a popular musical. But as the doors open at last, something spoils all thought of entertainment: a man in the queue is found murdered by the deadly thrust of a stiletto...

Outside a London theatre a throng of people wait expectantly for the last performance of a popular musical. But as the doors open at last, something spoils all thought of entertainment: a man in the queue is found murdered by the deadly thrust of a stiletto...