Nancy Drew: Secrets Can Kill Cheats

Phone numbers:
Whenever you find a phone number in the game, try calling it. For example, the number in the "Save The Manatees" book in the library, the torn note for the pharmacy in the school halls, Tony's pizza by the phones, the judo club near the gym, the detective's number in Jake's locker (the newspaper) , the number on the matchbook in the boiler room (after you are locked in), and Maxine's Diner number on the same matchbook and containers (after locked in).

Coded messages:
On almost every bulletin board in the school are pieces of paper stuck with pushpins that have messages that do not make any sense. Take a real mirror and hold it up to the paper displayed on screen. Also, in the library there are some books and charts with secret codes. One is "Don't run Nancy" and another is "The bolt cutter you must take!".