"What makes you think that?"

"Putting two and two together--what you've just told me with what I've been noticing and wondering about."

"Then you think those two--"

"Marthe and Leon," Jules pronounced with deliberation, "are two very bad eggs, if you ask me. I shan't shed a solitary tear if something sad happens to them in this 'bus to-night."

There was no time then to delve into his reasons for this statement of feeling. The outskirts of Caen were dropping behind. Providentially, the first bend in the road to Bayeux afforded good cover on the side toward the town. Jules shut off the power as he made the turn, and braked to a dead stop in lee of a row of outhouses. Lanyard was on the ground as soon as the wheels ceased to turn, Jules almost as quickly.

"Now for your engine trouble," Lanyard instructed. "Nothing serious, you understand--simply an adjustment to excuse a few minutes' delay and lend colour to our impatience."

"Got you the first time," Jules replied, unlatching and raising one wing of the hood.

Lanyard moved toward the middle of the road and flagged the Delorme touring car as it rounded the turn, a few seconds later, at such speed that Leon was put to it to stop the car fifty yards beyond the limousine. The man jumped down and, followed by the maid, ran back, but before he reached the limousine was obliged to jump aside to escape the grey car which, tooled by a crack racing hand, took the corner on two wheels, then straightened out and tore past in a smother of dust, with its muffler cut out and the exhaust bellowing like a machine-gun.

Lanyard counted four figures, two on the front seat, two in the tonneau. More than this, the headlong speed and the failing light rendered it impossible to see--though had the one been less and the other stronger, he could have gained little more information from inspection of those four shapes shrouded in dust coats and masked with goggles.

Watching its rear light dwindle, he fancied that the grey shadow was slowing down; but one could not be sure about that.