Hubert descended and crossed towards him, but to his surprise the detective turned away and did not appear to recognise him.

Indeed Pucci hurried off quickly as though business had called him elsewhere, and ere the diplomat could approach he was already out of the station.

In a secluded corner, away from the view of other arriving passengers, the detective halted, saying with relief:

Madonna mia, signore! That was a narrow escape of being detected.”

“Why?” inquired Hubert in surprise.

“Why, did you not see who arrived by the train with you?”

“No,” replied the Englishman. “I was not watching.”

“Her Royal Highness the Princess Luisa alighted from your train.”

“Her Highness?” he gasped utterly dumbfounded.

“Yes; but I hope she has not seen you,” Pucci remarked dubiously.