All you have to do is to try to remember as clearly as you can the circumstances of the earlier thefts at Charmerace.

You mustn't let them confuse you." "Thank you, your Grace, I will try and be as clear as I can," said Sonia; and she gave him an eloquent glance, full of gratitude for the warning; and went down the stairs with firm steps.
The Duke went on up the stairs, and knocked softly at the door of M.
Gournay-Martin's bedroom.

There was no answer to his knock, and he quietly opened the door and looked in.

Overcome by his misfortunes, the millionaire had sunk into a profound sleep and was snoring softly.

The Duke stepped inside the room, left the door open a couple of inches, drew a chair to it, and sat down watching the staircase through the opening of the door.
He sat frowning, with a look of profound pity on his face.