A woman with light hair, in a low dress by no means so fresh as it had been, and with a black mask on, through the eyelets of which her eyes twinkled strangely, was seated at one of the roulette-tables with a card and a pin and a couple of florins before her.As the croupier called out the colour and number, she pricked on the card with great care and regularity, and only ventured her money on the colours after the red or black had come up a certain number of times. It was strange to look at her.