Geoffrey had arrived in Paris the previous evening, and today he was taking a stroll. There were several tables outside a cafe on the banks of the river Seine, with gaily striped umbrellas over them, so Geoffrey seated himself at one and ordered a cafe au lait. The man at the next table glanced idly in his direction, and then continued to gaze with a mixture of astonishment and something else. Then, after the waiter had brought his coffee, the stranger picked up his own coffee and walked over to join him at the table...