"The Lyndon-Morrison Line!" he observed. "Tilbury to Sheppey twice daily. Passengers are requested not to speak to the man at the wheel."

"I think, Tommy," I said, "that we must make an exception in the case of Mr. Latimer."

CHAPTER XX

APPROACHING A SOLUTION

A Chinese proverb informs us that "there are three hundred and forty-six subjects for elegant conversation," but during the trip down I think that Tommy and I confined ourselves almost exclusively to two. One was Mr. Bruce Latimer, and the other was Joyce's amazing discovery about McMurtrie and Marks.

Concerning the latter Tommy was just as astonished and baffled as I was.

"I'm blessed if I know what to think about it, Neil," he admitted. "If it was any one else but Joyce, I should say she'd made a mistake. What on earth could McMurtrie have had to do with that Jew beast?"

"Joyce seems to think he had quite a lot to do with him," I said.

Tommy nodded. "I know. She's made up her mind he did the job all right; but, hang it all, one doesn't go and murder people without any conceivable reason."

"I can conceive plenty of excellent reasons for murdering Marks," I said impartially. "I should hardly think they would have appealed to McMurtrie, though. The chief thing that makes me suspicious about him is the fact of his knowing George and hiding it from me all this time. I suppose that was how he got hold of his information about the powder. George was almost the only person who knew of it."