And Nancy drew a long convulsive breath of relief.

They went down to the courtyard, and across to the porte cochère. While they did so Gerald Burton was unpleasantly conscious that they were being watched; watched from behind the door which led into the garden, for there stood Jules, a broom as almost always in his hand: watched from the kitchen window, where Madame Poulain stood with arms akimbo: watched from behind the glass pane of the little office which was only occupied when Monsieur Poulain was engaged in the pleasant task of making out his profitable weekly bills.

But not one of the three watchers came forward and offered to do them even the usual, trifling service of hailing a cab.

The two passed out into the narrow street and walked till they came to the square where stood, at this still early hour of the morning, long rows of open carriages.

"I think we'd better drive?" said Gerald Burton questioningly.

And his companion answered quickly, "Oh yes! I should like to get there as quickly as possible." And then her pale face flushed a little. "Mr. Burton, will you kindly pay for me?"

She put her purse, an absurd, delicately tinted little beaded purse which had been one of her wedding presents, into his hand.

Gerald took it without demur. Had he been escorting an American girl, he would have insisted on being paymaster, but some sure instinct had already taught him how to treat Nancy Dampier—he realised she preferred not adding a material to the many immaterial obligations she now owed the Burton family.

A quarter of an hour's quick driving brought them within sight of the low, menacing-looking building which is so curiously, in a sense so beautifully, situated on the left bank of the Seine, to the right of Notre Dame.

"Mrs. Dampier? I beg you not to get out of the carriage till I come and fetch you," said Gerald earnestly, "there is no necessity for you to come into the Morgue unless—" he hesitated.