When he reappeared again, she could hardly help giving a gasp of surprise.

His face was now covered by a mask⁠—but hardly a mask in the conventional sense. It was not shaped to the face. It was a mere piece of material hanging in front of the features like a curtain in which two slits were pierced for the eyes. In shape it was round and on it was the representation of a clock face, with the hands pointing to six o’clock.

“The Seven Dials!” said Bundle to herself.

And at that minute there came a new sound⁠—seven muffled taps.

Mosgorovsky strode across to where Bundle knew was the other cupboard door.

She heard a sharp click, and then the sound of greetings in a foreign tongue.

Presently she had a view of the newcomers.