The door was opened cautiously, and the next moment Bob was nearly dumfounded to find himself confronted by Mike Grogan.

CHAPTER XXI
BOB TAKES A RISK

If the young photographer was astonished, so was the Irishman.

“Phat, you?” he gasped.

“Mike Grogan!” ejaculated Bob.

He darted a swift glance around the interior of the room, and was even more taken back than before by beholding Casco and Barker seated at the table, a bottle between them.

“It’s that Alden boy,” cried Casco.

“Alden!” exclaimed Barker, jumping up. “How did he find out we were here?”

“I don’t know.”

“Is he alone?”