'And he could only have got up by that door?' Hugo pursued.

'Yes, sir.'

'Which means that you were away from your post last night, my son.'

'I was, sir,' Shawn admitted frankly. 'When you and Albert and the lady
ran off so quickly, I followed, as far as I judged expedient--beg
pardon, sir. The man must have slipped in during my absence. I remember
I noticed the masked door was ajar on my return. I shut and locked it.'

'That explains everything,' said Hugo. 'You see how your sins find you
out.'

'Yes, sir.'

'I say, Shawn,' Hugo cried, as he went to his bath, 'talking of that
chap up above, play me the Captives' chorus from "Fidelio."'

'It is not in the répertoire, sir,' said Simon, after searching.

'Not in the répertoire! Impossible!'

'No, sir.'

'Ah well, then, let us have the Wedding March from "Lohengrin."'

'With pleasure, sir.'

But Simon was unfortunate that morning. The toilet completed, Hugo came