They parted with expressions of thanks on the part of the detectives, who promised to keep the others advised of the progress of the inquiry.

A taxi brought them to St. Lazare, where, at the office of the superintendent of the line, Lefarge’s card had the usual magical effect.

‘Please be seated, gentlemen,’ said the superintendent, ‘and let me know what I can do for you.’

Lefarge showed him the receipt.

‘The matter is somewhat puzzling,’ he said. ‘That cask, as you see, was invoiced out via Havre and Southampton on the 30th ultimo, and yet it turned up in London on Monday, the 5th instant, by the Insular and Continental Steam Navigation Company’s boat Bullfinch from Rouen. The contents of the cask when it left Messrs. Dupierre’s showroom was a group of statuary, but when it arrived at St. Katharine’s Docks—well, I may tell you, monsieur, in confidence—it contained the body of a woman—murdered.’

The superintendent gave an exclamation of surprise.

‘You see, therefore, monsieur, the necessity of our tracing the cask as privately as possible.’

‘I certainly do. If you will wait a few minutes, gentlemen, I can get you part at least of the information you want.’

The few minutes had expanded into nearly an hour before the superintendent returned.

‘Sorry to have kept you so long,’ he apologised. ‘I find that your cask was delivered at our outward passenger cloak-room at about 4.15 p.m. on the 30th ultimo. It remained there until about 7.00 p.m., and during all this time it was under the personal supervision of one of the clerks named Duval, a most conscientious and reliable man. He states it stood in full view of his desk, and it would have been quite impossible for any one to have tampered with it. He particularly remembers it from its peculiar shape and its weight, as well as because it was an unusual object to send by passenger train. At about 7.00 p.m. it was taken charge of by two porters and placed in the van of the 7.47 p.m. English boat train. The guard of the train was present when they put it into the van, and he should have been there till the train left. The guard is unfortunately off duty at present, but I have sent for him and will get his statement. Once the train left, the cask would simply be bound to go to Havre. If it had not done so with that insurance on it, we should have heard about it. However, I will communicate with our agent at Havre, and I should be able to get definite information in the morning.’