"_Yi kow pu hau-tung sai-kai!_" he cried sharply.
"_Ta hau_," came the driver's answering sing-song, "_kia hing_."
With a jerk the car speeded up, throwing the passengers back against the cushions. Don felt Lotus' small, cool hand close down on his finger.
"It's that car following us, André," she explained. "Cho-San has just told Ko Loo, the chauffeur, to speed up and lose it."
Don twisted to look through the rear window at the criss-crossing traffic of an intersection. With a short laugh he turned back.
"Cho-San knows best," he remarked lightly. "I couldn't tell if one of those pairs of lights back there were following us. It looks to me as if they all are. But what's the difference?"
"None, my dear Borg," rumbled Cho-San, "considering that Ko Loo has never yet failed to put an enemy off the trail. As a matter of fact, two sets of lights are following us at this moment. The trailer is being trailed by one of our own cars. He will have an unpleasant surprise, in addition to losing track of us!"
Sharp anxiety shot through Don's mind. "An unpleasant surprise" might mean anything from a car accident to murder. And Red Pennington was the trailer who was going to get it!
However, there was nothing in the world that Don could do to warn his friend. By this time both cars were out of sight. Ko Loo skidded the big limousine around two more dim corners at twenty miles an hour, and pulled up abruptly in front of a dark warehouse.
"_Ki-wo-pu teh shwoh!_" sang out Cho-San's commanding bass.
"_Ta chang!_" came the answer, as Ko Loo sprang out to obey the order. In the foggy night the chauffeur's voice had a curious, muffled sound.
Almost immediately he returned, and the car rolled silently forward into a black, cavelike opening. As it stopped, Lotus again squeezed Don's hand.
"Last time, we came another way--remember, André?" she whispered. "We are now in the garage next to Cho-San's curio shop. Of course it doesn't look like a garage from the outside with the doors closed...."
"_Yi ko pu hau!_ I shall not need you any more, Ko Loo," interrupted Cho-San harshly. "Get out; Lotus. I'll follow you, Count Borg. Since your mind is admittedly sick, I would rather not turn my back on you, even here in my own quarters!"