Sergeant Riley arrived just then and reported that the fire department had the blaze under control and that it was only a question of a short time before it would be entirely out.
"'Tis lucky it is no worse," he said seriously.
"And it's also lucky that my insurance will pay for it all," added Mr.
Cook.
"The thing that makes me mad is that the German divils who exploded the bomb all got away," exclaimed the sergeant bitterly.
"Were there more than one of them?" asked Bob.
"We don't know for sure," replied Riley. "One o' the men told me he saw two of them running away, but he may have been mistaken."
"Well, Hugh and I caught one of them," said Bob.
"You did!" almost shrieked Sergeant Riley, bouncing out of his chair.
"Where is he then?"
"We don't know."
"What do yez mean?"