I mentioned role-playing games above an although it's been a long time, I've decided to finally post some hints on making a Nancy Drew-type character based on the GURPS game. Here are some things gleaned from this site and other sources.
DISADVANTAGES/QUIRKS: Wears reading glasses. Impulsive. Youth. Weirdness magnet. Left handed.
ADVANTAGES: Wealth: Comfortable. Independent income (From books. 2 points). Social status.
"Killer's Eye": You can make an opponent nervous or afraid just by looking at them. (Nancy has made a couple of people back down in the books)
"Owed a favor": You did someone a kindness and they are willing to help. The pay-back must not exceed the debt and can only be used once. (Kim Possible collects on favors a lot)
"Knows a guy": This is like Owed A Favor, but you can call on this person many times. They may get you tickets to that concert for a price, or because you both swore a blood oath in a muddy trench at Verdun. He may ask YOU for a favor in exchange.
"Connected": Like Knows A Guy, but the person is in an advantageous position. Nancy is connected to the River Heights police through Officer Masters (Crumbling Wall) and Chief MacGinnis and it's hinted that Mr. Drew knows people in the state government. Oddly, it may be better to know a CLERK in the city government rather than the mayor because the mayor can be voted out of office or caught up in a scandal that could reflect badly on YOU!