"Mrs. Hallam," he stammered, "I—"

She lifted her shoulders impatiently and with a quick movement stepped back across the threshold, where she paused, a rounded arm barring the entrance, one hand grasping the door-knob, as if to shut him out at any moment.

"I'm awaiting your explanation," she said coldly.

"I'm waiting your explanation," she said coldly.

He grinned with nervousness, striving to penetrate the mental processes of this handsome Mrs. Hallam. She seemed to regard him with a suspicion which he thought inexcusable. Did she suppose he had spirited Dorothy Calendar away and then called to apprise her of the fact? Or that he was some sort of an adventurer, who had manufactured a plausible yarn to gain him access to her home? Or—harking back to her original theory—that he was an emissary from Scotland Yard? ... Probably she distrusted him on the latter hypothesis. The reflection left him more at ease.

"I am quite as mystified as you, Mrs. Hallam," he began. "Miss Calendar was here, at this door, in a four-wheeler, not ten minutes ago, and—"

"Then where is she now?"

"Tell me where Calendar is," he retorted, inspired, "and I'll try to answer you!"

But her eyes were blank. "You mean—?"

"That Calendar was in this house when I came; that he left, found his daughter in the cab, and drove off with her. It's clear enough."