‘There had,’ he said, ‘been two other homicides, one in Ismalia and one in Paris where undoubtedly Foljambe had been the expert. But not a hope of cracking down on him. The latest line suggested that he had lit off for France. An envelope of the sort used by a well-known travel-agency had been dropped on the floor near Andropulos’s body and it had a note of the price of tickets and times of departure from London scribbled on the back. It had, as was afterwards realized, been planted by the Jampot and had successfully decoyed Mr Fox across the Channel. A typical stroke. I’ve already talked about his talent—it amounts to genius—for type-casting himself. I don’t think I mentioned that when he likes to turn it on he has a strong attraction for many, but not all, women. His ear for dialects of every description is phenomenal, of course, but he not only speaks whatever it may be—Oxbridge, superior grammar, Australasian, barrow-boy or Bronx, but he really seems to think along the appropriate wave-lengths. Rather as an actor gets behind the thought-pattern of the character he plays. He can act stupid, by the way, like nobody’s business. He is no doubt a great loss to the stage. He is gregarious, which you’d think would be risky and he has a number of unexpected, off-beat skills that occasionally come in very handy indeed.

‘Well: you’ll appreciate the situation. Take a look at it. Andropulos has been murdered, almost certainly by the Jampot and the Jampot’s at large. Andropulos, scarcely a candidate, one would have thought, for the blameless delights of British Inland Waterways was to have been a passenger in the Zodiac. My wife now has his cabin. There’s no logical reason in the wide world why his murderer should be her fellow-passenger: indeed the idea at first sight is ludicrous, and yet and yet—my wife tells me that her innocent remark about “Constables” seemed to cast an extraordinary gloom upon someone or other in the party, that the newspaper report of Andropulos’s murder has been suppressed by someone in the Zodiac, that she’s pretty sure an Australian padre who wears dark glasses and conceals his right eye has purloined a page of a farcical spinster’s diary, that she half-suspects him of listening-in to her telephone conversation with Mr Fox and that she herself can’t escape a feeling of impending disaster. And there’s one other feature of this unlikely set-up that, however idiotically, strikes me as being more disturbing than all the rest put together. I wonder if any of you—’

But the man in the second row already had his hand up.

‘Exactly,’ Alleyn said when the phenomenon had delivered himself of the correct answer in a strong Scots accent. ‘Quite so. And you might remember that I am five thousand odd miles away in San Francisco on an extremely important conference.