"Surely it must have been O'Murphy's doing."

"Yes, because if it was Daniels' the Prime Minister would have heard the order, and would have asked the reason. But there are altogether too many 'whys' in this affair, and they contradict each other. If O'Murphy is an honest man, why did he leave the main road? But if he was a dishonest man, why did he start the car again when only two shots had been fired - thereby, in all probability, saving the Prime Minister's life? And, again, if he was honest, why did he, immediately on leaving Charing Cross, drive to a well-known rendezvous of German spies?"

"It looks bad," I said.

"Let us look at the case with method. What have we for and against these two men? Take O'Murphy first. Against: that his conduct in leaving the main road was suspicious; that he is an Irishman from County Clare; that he has disappeared in a highly suggestive manner. For: that his promptness in restarting the car saved the Premier's life; that he is a Scotland Yard man, and, obviously, from the post allotted to him, a trusted detective. Now for Daniels. There is not much against him, except the fact that nothing is known of his antecedents, and that he speaks too many languages for a good Englishman! (Pardon me, mon ami, but, as linguists, you are deplorable!) Now for him, we have the fact that he was found gagged, bound, and chloroformed - which does not look as though he had anything to do with the matter."

"He might have gagged and bound himself, to divert suspicion." Poirot shook his head. "The French police would make no mistake of that kind. Besides, once he had attained his object, and the Prime Minister was safely abducted, there would not be much point in his remaining behind. His accomplices could have gagged and chloroformed him, of course, but I fail to see what object they hoped to accomplish by it. He can be of little use to them now, for, until the circumstances concerning the Prime Minister have been cleared up, he is bound to be closely watched."

"Perhaps he hoped to start the police on a false scent?"

"Then why did he not do so? He merely says that something was pressed over his nose and mouth, and that he remembers nothing more. There is no false scent there. It sounds remarkably like the truth."

"Well," I said, glancing at the clock, "I suppose we'd better start for the station. You may find more clues in France."

"Possibly, mon ami, but I doubt it. It is still incredible to me that the Prime Minister has not been discovered in that limited area, where the difficulty of concealing him must be tremendous. If the military and the police of two countries have not found him, how shall I?" At Charing Cross we were met by Mr Dodge.

"This is Detective Barnes, of Scotland Yard, and Major Norman. They will hold themselves entirely at your disposal. Good luck to you. It's a bad business, but I've not given up hope. Must be off now." And the Minister strode rapidly away.