The falling closet floor was that of an elevator, no longer in use as such, yet which still worked on the slides of the elevator well, and evidently had been cleverly adjusted for just such an emergency as that depicted.

Presently there came a heavy jar, and then the downward motion ceased. The close-fitting floor at first had fallen so swiftly that the confined air in the well beneath it had become so compressed as to form an air cushion, which finally let the floor completely down only after the air had gradually escaped. It was this escaping air Nick heard during the last moments of his fall.

The entire episode began and ended in but little more than a moment, however. Though considerably jarred, Nick pulled himself together, and gazed up through the darkness at the bottom of the well.

Cervera was peering down from the lighted passage three stories above him, Nick having made a clean drop into the cellar of the imposing residence.

That this entire contrivance was the work of the Kilgore gang, devised while they masqueraded at Cervera's house, Nick was thoroughly convinced.

"Hello!" Cervera suddenly cried, still gazing down into the darkness enveloping Nick. "Are you there, Mr. Carter?"

Nick stared up at her, but made no answer.

At the same time he felt quietly over the walls of the well, in the hope of finding some way of escape.

It riled him not a little, the thought of having been so deftly caught in a trap, almost entirely owing to his having been overconfident, an assurance only very natural under the circumstances.

The possibility that this woman might now elude him for a time was also a thorn in Nick's mind.