"Did your daughter say how the man was dressed?" asked Sam.
"Sure! She said he had on a dark suit of clothes and a dark, soft hat. That's all she knew."
"Was he a big man?"
"Oh, she said he was about middlin' big."
This was all the old janitor could tell, and a little later he brought in both his wife and his daughter to be interviewed. The girl was almost scared to death, and could add nothing to what her father had already told.
"Well, it's a clew, even if it is a slight one," was Tom's comment. "Dick, I guess the best thing you can do is to call up police headquarters."
"I'll do it. But please remember one thing," went on the oldest Rover boy, turning to the janitor and his family and also the office boy. "We want to keep this as quiet as possible for the present, so please don't say anything about it." And all of them promised to keep silent.
It did not take long for Dick to get into communication with the authorities, and after a short talk over the telephone, he was told that a couple of detectives would be sent down to his once without delay.
"Have you told Mr. Powell?" questioned Tom, suddenly.
"No, but I will call him up now," answered his older brother.