"What is it?"
She hardly noticed his tone.
"A man—a man, in my flat," she gasped, and showed her torn sleeve, "a man...!"
He pushed her aside and made for the door.
"The key?" he said quickly.
With trembling fingers she extracted it from her pocket.
"One moment."
He disappeared into his own flat and presently came out holding an electric torch. He snapped back the lock, put the key in his pocket and then, to her amazement, he slipped a short-barrelled revolver from his hip-pocket.
With his foot he pushed open the door and she watched him vanish into the gloomy interior.