Tuppence, though utterly taken aback, nevertheless kept her head. She had not the faintest comprehension of his meaning, but she was naturally quick-witted, and felt it imperative to “keep her end up” as she phrased it.

Whittington went on:

“Been playing with me, have you, all the time, like a cat and mouse? Knew all the time what I wanted you for, but kept up the comedy. Is that it, eh?” He was cooling down. The red colour was ebbing out of his face. He eyed her keenly. “Who’s been blabbing? Rita?”

Tuppence shook her head. She was doubtful as to how long she could sustain this illusion, but she realized the importance of not dragging an unknown Rita into it.

“No,” she replied with perfect truth. “Rita knows nothing about me.”

His eyes still bored into her like gimlets.

“How much do you know?” he shot out.