Check the paper you got from the police officer

Suddenly you remember the strange encounter at the street. The young police officer gave you a piece of paper. You still have it in your pocket. When you pull it out you immediately see a phone number written on it. You remember that FBI-Agent Warren told you about a contact in the area to keep an eye on you. This must be the officer guarding the street.

You are not sure what to do with this information. You could call the officer, but if anybody hears you, you are in big trouble. You could also tell your father about it to increase his trust in you. But this way you would put the life of the policeman in danger. Maybe it would be for the best to ignore it for a while. But you could miss something if do so.