"His name iss Mueller. He iss the one who set off the bomb tonight."
"That's what we thought," exclaimed Bob. "Well, Hugh, you hit him one good one anyway, didn't you?"
"I hope so," said Hugh.
"There was four of them altogether," said Heinrich. "Kraus, Mueller, Hoffmann, and a man named Schaefer who went to blow up the railroad bridge Friday night and has not been heard of since."
"We know where he is, don't we, Hugh?" laughed Bob.
"Where iss he?" demanded Heinrich.
"In jail, I guess," said Bob. "We caught him on the bridge with a bomb."
"Good boys," said Heinrich warmly.
"Why were you so angry when you had to go with father tonight?" asked
Bob. "Where was your engagement?"
"I was going with Lena to twelve eighty-two Elm Street, where Schaefer lived. You see Lena was already a member of the gang, so they thought, and I was to join too, so we both could watch them better."