“Yis, but——”
Bob caught no more. There was a quick step on the stairs, and the janitor of the building appeared, broom in hand, to sweep out the place.
“Hullo! what are you doing at that door?” he asked, loudly.
Bob motioned him to be silent, and then tiptoed his way to where the man stood, mouth wide open in expectation.
“There are three well-known robbers in Mr. Lawrence’s office,” whispered the youth.
“Robbers!” cried the man, louder than ever. “Just wait till I get after them!”
“Better summon the police,” urged Bob. “They are all strong men, and you cannot capture them alone.”
“We’ll see if I can’t,” cried the janitor, who was a very self-important individual. “Run for the police yourself, if you want to.”
He took a key from his pocket and unlocked the office door.
Rushing into the apartment he gazed around.