“If you will come with me,” continued Dr. Tosswill, “I will take you to Sir Guy Willard. He was most anxious to be informed as soon as you should arrive.”

We were taken across the camp to a large tent. Dr. Tosswill lifted up the flap and we entered. Three men were sitting inside.

“Monsieur Poirot and Captain Hastings have arrived, Sir Guy,” said Tosswill.

The youngest of the three men jumped up and came forward to greet us. There was a certain impulsiveness in his manner which reminded me of his mother. He was not nearly so sunburnt as the others, and that fact, coupled with a certain haggardness round the eyes, made him look older than his twenty-two years. He was clearly endeavouring to bear up under a severe mental strain.