In October 2056 the Smithsonian Air and Space Museum is hit by the most spectacular burglary in modern history.

The public is intrigued, but what they don't know is that the act is connected to a much more serious crime than they suspect.

The Key Ring is book number two in the Nerdology series. It is shorter and faster paced than the first book and the protagonists in it are forced to solve lots of puzzles to come closer to their goal.

Here are three hard core questions for people who have already read the book.

Q.KR#1:

What makes Mikko think that Riverside is a special place?

Q.KR#2:

What is Truls Ivanov's code name?

Q.KR#3:

What made the investigaton coordinators think that the trio needed to go to Saint Louis?