'You didn't find Mrs. Francis Tudor, sir?' Simon blandly repeated.

'Mind your own business, my friend,' he said.

'Certainly, sir,' said Simon. 'But I had intended to add that possibly you had not been searching for Mrs. Tudor in the right city.'

Hugo stared at Simon, who retreated to the door.

'What in thunder do you mean?' Hugo asked coldly and deliberately.

At last Simon felt a tremor.

'I mean, sir, that I think I know where she is. At least, I know where she will be in a couple of hours' time.'

'Where?'

'In Department 42—her old department, sir.'

By a terrific effort Hugo kept calm.