“No. If I could once get at a reason I might spot the person who carried Field off. What the fellow wanted with his dead body, unless it was to play counter to me, I cannot understand.”

“That’s what it looks like.”

“Yes, that and nothing else, but I can’t think of anybody who would be likely to be in the game, as nobody knew what I was up to.”

The woman’s jealousy led her to revert to that other Helen again, saying:

“You will not think of marrying her until it is settled that she is dead certain of getting the money as well as the credit of being old Field’s daughter?”

“Of course not. But, hark!”

While the man and the woman were listening to some sound that had reached their ears the detective was busily thinking.

What he had heard was a revelation to him in every sense of the word.

While in some unimportant particulars it proved his first theory wrong, in the main it supported it amply.

Holding the key to the mystery now, he saw how it had all been brought about, save for one point. This was the precise motive that had led to Mr. Field being carried away.