about nine o'clock
They then returned to camp . Bob was compelled to tell his mates all about the trip , and they were greatly excited when they were told of the scene in the hut when it was necessary to hold up the German in self-defense at the point of a rifle . When Bob and Mr. Waterman arrived in Escouniaias early the next morning-they found things in a great state of excitement . It seems that Pierre and Jack had gotten in about nine o'clock the night before , hot on the trail of the spy . To the chagrin of Sandy MacPherson , an old friend of his named Field , had come into the store and without showing any signs of haste had made arrangements for a launch to take him down the river . This had been done and a half hour later Pierre had arrived . He had tried to explain the situation , but it was not until Jack had given his version of the matter that it dawned on the irate Sandy that the innocent-looking and very friendly Field was the German spy .