There was a faint pause before Maynard spoke. “I’ve tried to locate the taxi-driver but without success.”

“Too bad.” Mitchell’s frown deepened. “Did Captain La Montagne describe the man’s appearance?”

“Only to state that he wore a chauffeur’s outfit.” Maynard hesitated before adding, “Captain La Montagne said he did not obtain a good look at the man’s face as he ran away from him and up the staircase.”

“But I can describe his looks,” broke in Palmer. “He’s the man we saw on the next floor—medium height, red hair, and freckles, Mitchell,” and the detective took down the description. “His first name is Sam,” added Palmer. “He drives for me quite often and works for the Potomac Garage.”

“Hold on,” Maynard interrupted in his turn. “I’ve seen Sam and he declares he did not stop here Thursday night.”

“Oh!” Mitchell stared at Maynard. “That puts a crimp in La Montagne’s story.”

“Not necessarily,” objected Hayden. “More than one taxi-driver comes to this apartment house. Have you asked the janitor or the elevator boys, Maynard, if they saw other chauffeurs than Sam here on Thursday night?”

“Suppose you leave that investigation to me,” suggested Mitchell good naturedly. “Now I’m in this chase I must handle it; not that your idea isn’t a good one, doctor, but I can think of a better now. Can I see your Jap servant, Mr. Palmer?”

“Certainly.” Palmer rang the bell impatiently. “I am not sure he has returned; yes, here he is,” as the Japanese appeared in the hall. Palmer raised his voice. “Siki, this gentleman,” indicating Mitchell, “wants to talk to you.”

The servant moved rapidly toward them and bowed profoundly, then stood silently waiting.