"The magistrate in the night court settled the case that night," informed O'Connor, under his breath, laying down two slips of paper before Kennedy, "but I have their pedigrees. That fellow's name is Ronald Mawson," he said, pointing to Cecilie's companion, then indicating the gunman, "That's Frank Giani—Frank the Wop."

I watched Mawson and Cecilie closely, but could discover nothing. They scarcely looked at each other.

McGee, however, glared at both Mawson and the gunman, though none of them said a word.

"They used to be out there as stable-boys at Broadhurst's," I heard O'Connor continue, in a whisper. "I think they had a run-in and were fired. Each says the other got him in wrong."

A moment later Kennedy began:

"When you came to my laboratory the other day, Mr. Broadhurst," he said, "you remarked that perhaps this case might be a little out of my line, but that I might find it sufficiently interesting. I can assure you that I have not only found it interesting, but astounding. I have seldom had the privilege of unraveling a mystery which was so cleverly rigged and in which there are so many cross-currents of human passion."

"Then you think Lady Lee was doped?" asked Broadhurst.

"Doped?" interjected McGee quickly. "Why, Mr. Broadhurst, you remember what the veterinary said. He couldn't find any signs of heroin or any other dope they use."

"That's the devilish ingenuity of it all," shot out Kennedy suddenly, holding up a little beaker in which there was some colorless fluid. "I am merely going to show you now what can be done by the use of one of the latest discoveries of physiological chemistry."

He took a syringe and, drawing back the plunger, filled it with the liquid. With a slight jab of cocaine to make the little operation absolutely painless, he injected the fluid into the livelier of our two guinea-pigs.