"The best thing you can do is to put Mr. Distin in possession of the details you heard from Mademoiselle Beauville. He can make inquiries at the Charing Cross Station, where it is just possible the girl may be remembered by some of the porters. A girl travelling alone, and meeting a gentleman on the platform. The meeting may have been observed even there, where hundreds meet and part every hour. Railway officials are observant and keen-witted. It is within the limits of the possible that this poor girl may not have passed altogether unremarked."
"I will write to Distin this afternoon," said Heathcote. "And there is another thing I can do. If your theory is correct, Léonie Lemarque missed the person who was to have met her at the station, and fell into bad hands. If that is so, the fact ought to be arrived at easily by an appeal to the person whom she should have met."
He took out his pencil and pocket-book, and wrote the rough draft of an advertisement:
"The person who was to have met Léonie Lemarque at Charing Cross Station on the morning of July 5th last is earnestly requested to communicate immediately with Messrs. Distin & Son, Solicitors, Furnival's Inn."
He translated this advertisement to Monsieur Drubarde.
"Yes, that is a wise test," said the police-officer. "I see you have the true flair. If the man is innocent, he will answer that advertisement—always supposing that it come to his knowledge."
"I will repeat it so often in the Times that it will not be easy for the appeal to escape him," answered Heathcote.
"Then if there is no sign, we shall say guilty," said Drubarde.
"And in that case we have to find the villain."
"You may add a postscript to your letter to Monsieur Distin, advising him to inquire at the cloak-room of Charing Cross Station for an unclaimed handbag left there on July 5th. Something must have been done with that handbag, and, in our civilised condition, it is not easy to get rid of even a handbag."