A long line had formed for the standing-room-only section of the Woffington Theatre. London's favorite musical comedy of the past two years was finishing its run at the end of the week. Suddenly, the line began to move, forming a wedge before the open doors as hopeful theatergoers nudged their way forward. But one man, his head sunk down upon his chest, slowly sank to his knees and then, still more slowly, keeled over on his face. Thinking he had...