“Aha! I thought so!” M. Popeau turned to Lily. “My friend Bouton is Police Commissioner here,” he observed significantly.

“Where do you want me to go?” asked the man, in a resigned tone.

“To La Solitude.”

Without any more ado the taxicab turned round and started at a speed which seemed to Lily very dangerous. It was a whirlwind rather than a drive. But once they had left the beautiful gardens, and were through the curious network of town streets which lie behind the Casino grounds, the man slowed down, and soon they were breasting the hill up what was little more than a rough, dry, rutted way through orange groves and olive trees.

“Turn your head round,” said M. Popeau suddenly, “and then you will see, my dear lady, one of the six most beautiful views in the world, and yet one which comparatively few of the visitors to Monte Carlo ever take the trouble to climb up here and enjoy.”

Lily obeyed, and then she uttered an exclamation of delight at the marvellous panorama of sea, sky, and delicate vivid, green-blue vegetation which lay below and all about her. Monte Carlo, with its white palaces, looked like a town in fairyland.

Up and up they went, along winding ways cut in the mountain side. Even M. Popeau was impressed by the steepness of the gradient, and the distance traversed by them.

All at once the taxi took a sudden turn to the left and drew up on a rough clearing surrounded by old, grey olive trees. The atmosphere was strangely still, and though it was a hot day, Lily suddenly felt chilly—a touch, no doubt, of the mountain air. There crept over her, too, a queer, eerie feeling of utter loneliness.

“Your friends have certainly well named their villa! Even I, who thought I knew the whole principality of Monaco more or less well, never came across this remote and lonely spot.”

“This is the most convenient point by which a carriage can approach the villa,” said the driver turning round. “The house is not far—just a few yards up through the trees.”