Donovan once again related his story and then went off in search of a doctor to care for his burns.

"It's bad business, Sergeant," said Mr. Cook.

"It is," Riley agreed. "I'd like to get me hands on some of them fellows."

"Seems queer that they should have blown up one of their own men."

"'Twas probably a mistake. Perhaps they saw us coming and were in such a hurry that our friend Wernberg had no time to get away."

"But look here," protested Bob. "Don't you remember what Donovan said that Mr. Wernberg said when he burst into the room?"

"He said, 'they tried to blow me up,'" quoted Mr. Cook.

"Exactly," exclaimed Bob. "Doesn't that seem queer to you?"

"He was probably left there by mistake, as the sergeant says," said Mr. Cook.

"But," Bob insisted, "the door was locked."