People do not wreck vessels for the pleasure of wrecking them. Men do not run all those risks of fog, rocks, swimming, concealment, and flight without an interest. What could have been Clubin’s interest?

The act seemed plain, but the motive was puzzling.

Hence a doubt in many minds. Where there is no motive, it is natural to infer that there was no act.

The missing link was important. The letter from Rantaine seemed to supply it.

This letter furnished a motive for Clubin’s supposed crime: seventy-five thousand francs to be appropriated.

Rantaine was the Deus ex machina. He had descended from the clouds with a lantern in his hand. His letter was the final light upon the affair. It explained everything, and even promised a witness in the person of Ahier-Tostevin.

The part which it at once suggested for the revolver was decisive. Rantaine was undoubtedly well informed. His letter pointed clearly the explanation of the mystery.

There could be no possible palliation of Clubin’s crime. He had premeditated the shipwreck; the proofs were the preparations discovered in the haunted house. Even supposing him innocent, and admitting the wreck to have been accidental, would he not, at the last moment, when he had determined to sacrifice himself with the vessel, have entrusted the seventy-five thousand francs to the men who escaped in the long-boat. The evidence was strikingly complete. Now what had become of Clubin? He had probably been the victim of his blunder. He had doubtless perished upon the Douvres.

All this construction of surmises, which were not far from the reality, had for several days occupied the mind of Mess Lethierry. The letter from Rantaine had done him the service of setting him to think. He was at first shaken by his surprise; then he made an effort to reflect. He made another effort more difficult still, that of inquiry. He was induced to listen, and even seek conversation. At the end of a week, he had become, to a certain degree, in the world again; his thoughts had regained their coherence, and he was almost restored. He had emerged from his confused and troubled state.

Rantaine’s letter, even admitting that Mess Lethierry could ever have entertained any hope of the reimbursement of his money, destroyed that last chance.