There is nothing to discover.

There is nothing going on here which the whole world might not know." "That was never my plea," Lessingham intervened.
"Nor is it the truth," Sir Henry added sternly.
"The Baron Maderstrom was sent here, Philippa, to spy upon me, to gain access by any means to this house, to steal, if he could, certain plans and charts prepared by me." Philippa began to tremble.

She seemed bereft of words.
"He told me this," she faltered.

"He told me not half an hour ago." There was a tapping at the door.

Sir Henry moved towards it but did not turn the key.
"Who is that ?" he asked.
"Captain Griffiths is here with an escort, sir," Mills announced.