His eyes opened wide as he looked around. Whatever the place might look like from the outside, the interior certainly did not have the appearance of a shed. It was a strange setting, and it seemed all the stranger because he had found Helen Hardwick in it. At one end was a long bench covered with bottles, glass jars, tubes, and a queer-looking assortment of chemical apparatus. The walls were lined with rows of tall cabinets with glass doors, each containing a skeleton, and above these was a frieze of photographs and X-ray prints in black frames.

He wondered how Miss Hardwick happened to be in such strange surroundings. Her large, long-lashed eyes avoided him, and her right hand, cramped about the handle of the pistol, wavered a trifle. She had changed since their last meeting, he noticed. She had seemed half child and half woman then, a vivacious young creature with a mixture of reckless audacity, demure wistfulness and adorable shyness whose bewildering contradictions had enhanced a loveliness that had gone to the Phantom’s head like foaming wine. In the course of a few months she had acquired the subtle and indefinable something that differentiates girlhood from womanhood. Her face—he had liked to think of it as heart-shaped—had sobered a little, and the graceful lines of chin and throat seemed firmer. Faintly penciled shadows at the corners of her lips hinted that a touch of somberness had crept into her mood, but even such a trifling detail as a few wisps of loosened hair dangling sportively against her cheeks seemed to go a long way toward upsetting this effect.

Doctor Bimble’s thin and rasping voice startled the Phantom out of his reverie.

“My laboratory, sir,” he explained with a comprehensive wave of the hand. “What you see here is probably the most remarkable collection of its kind in the world. Each of these skeletons represents a distinct criminal type. Here, for instance are the bones of Raschenell, the famous apache. They are supposed to be buried in a cemetery in Paris, but a certain French official for whom I once did a favor was obliging. In my private rogues’ gallery you see photographs of some of the most notorious criminals the world has ever known, and these X-ray pictures illustrate various pathological conditions usually associated with criminal tendencies. Quite remarkable, you will admit.”

“Quite,” said the Phantom a little absently, as if his mind were occupied with more pressing matters than the bones of notorious malefactors.

“You may feel perfectly at ease, my friend.” The little doctor, noticing the Phantom’s abstraction, spoke soothingly. “I think I have already made it clear that the pursuit and capture of criminals don’t interest me. Without doubt we shall arrive at some amicable understanding that will insure your safety.”

“Understanding?” echoed the Phantom, having detected a slight but significant emphasis on the word.

“Yes; why not? You have interested me for some time, Mr.—ahem. Let me see—I believe your real name is Cuthbert Vanardy?”

The Phantom nodded.

“Making due allowance for the exaggerations of stupid newspaper writers, I have long recognized that you are a remarkable individual. Yes, remarkable. You do not belong to any of the types mentioned by Prichard, Pinel, and Lombroso, but you are a type of your own. Naturally you arouse my scientific curiosity. Nothing would please me more than to add you to my collection.”