"Just so. There might, for example, be a trap-door in this very room——"
Colonel Johnson sprang to his feet and advanced toward his unwelcome guest.
"Tell me what you mean," he said savagely. "I am not the man to be bearded in my own house. You will yet repent your temerity in thrusting yourself here."
Benjamin Baker also rose to his feet, and, putting a whistle to his mouth, whistled shrilly.
Instantly two stalwart policemen sprang into the apartment from the hall outside.
"Seize that man!" said the detective.
"What does this mean?" asked Johnson, struggling, but ineffectually.
"It means, Colonel Johnson, alias Robert Kidd, that you are arrested on a charge of being implicated in the attempt to steal a parcel of bonds belonging to the National Bank of Chester, Maine."
"I don't know anything about it," said Johnson sullenly. "You've got the wrong man."