CHAPTER XIX.
A TRAITOR IN THE SERVICE Crack! spoke a rifle across the street.
"I got him, sir!" cried the exultant voice of Riley.

"But I'll make sure of him, sir!" Crack! The Navy rifle spoke once more.
Noiselessly Darrin darted across the street.
On the roof of the house in which Dave had seen the bandit, Cosetta, the previous day, lay a man, his head and shoulders hanging over the edge.
"Speak softly," cautioned Darrin.

"I don't want those men inside the house to hear you." "He fell just like that when I fired the first shot, sir," Riley whispered.

"I sent him the second bullet to make sure that he wasn't playing 'possum." "And now," Dave ordered, "run down the street as noiselessly as you can go, and tell Lieutenant Trent that I wish he would come here in person, if possible, with a few men.

Ask him, with my compliments to approach as noiselessly as possible, for I expect to make a surprise 'bag' here." Riley glanced at his officer in swift astonishment, but he saw that Darrin was speaking seriously, so he saluted and departed at a run.
Shortly Riley was back.
"Lieutenant Trent is coming, sir," whispered the coxswain.