Entering his study, he seated himself at his table and prepared to begin work. Then he bethought him of the letter, which he had carelessly thrown on the mantelpiece. He tore it open, and drew out a sheet of letter paper.

"Whatever is this?" he cried. His astonishment was natural enough, for the message was oddly put together. To prevent his handwriting being recognised, Fandor's correspondent had cut letters out of a newspaper, and had stuck them together in the desired order. The two or three lines of printed matter were as follows:

"Jérôme Fandor, pay attention, great attention! The affair on which you are concentrating all your powers is worthy of all possible interest, but may have terribly dangerous consequences."

Of course there was no signature.

Evidently the warning referred to the Dollon case.

"Why," exclaimed Fandor, "this is simply an invitation not to busy myself hunting for the guilty persons!... Who has sent this invitation and warning? Surely the sender is the assassin, to whose interest it is that the inquiry into the rue Norvins murder should be dropped!... It must be Jacques Dollon!... But how could Dollon know my address? How could he have found time between his flight from the Dépôt and the present minute, to put this message of printed letters together, and take it to the rue Bergere?... And that at the risk of encountering someone who could recognise him, and might have him arrested afresh? Had he accomplices?"

Fandor was puzzled, agitated:

"But I am mad!... mad! It cannot be Dollon!... Dollon is dead—dead as a door nail—dead beyond dispute, because fifty men have seen him dead; dead, because the Dépôt doctors have certified his death!"

Daylight was fading; evening was coming on; Fandor was still turning the whole affair over in his mind. Every now and again he murmured:

"Fantômas! Fantômas has to do with this extraordinary, this mysterious affair! Fantômas is in it!... Fantômas!"