After a few more questions he took Jack outside.
"It looks very much to me as though it were one of those crimes of passion which are so frequent in this country," he said. "Mordon was a Frenchman and I have been able to identify him by tattoo marks on his arm, as a man who has been in the hands of the police many times."
"You think there is no hope?"
The detective shrugged his shoulders.
"We are dragging the pool. There is very deep water under the rock, but the chances are that the body has been washed out to sea. There is clearly no evidence against these people, except yours. The letters might, of course, have been forged, but you say you are certain that the writing is Mrs. Meredith's."
Jack nodded.
They were walking down the road towards the officers' waiting car, when Jack asked:
"May I see that letter again?"
The detective took it from his pocket book and Jack stopped and scanned it.
"Yes, it is her writing," he said and then uttered an exclamation.