“It adjoins the side stairway.”

“The one leading down to the corridor adjoining Clayton’s private office?”

“Yes.”

“H’m, is that so?” Patsy muttered. “This looks very much as if I had hit a promising trail.”

“You mean——”

“Never mind what I mean, Vernon, and be sure you don’t lisp a word of this, nor look at Doctor Guelpa as if you had any distrust,” cautioned Patsy. “Is his suite on the same floor as that of Mademoiselle Falloni?”

“Yes, and in the same corridor.”

“What’s the number?”

Vernon glanced at a schedule on the bookkeeper’s desk and quickly informed him, Patsy mentally retaining the number.

“Have you seen Doctor Guelpa this evening?” he then inquired.