Warning: This section will NOT contain spoilers
The Westing Game is a simple yet complex book. The book has a lot of red herrings and when you finish the book you think that the real clues are so obvious. If you see the right clues then the mystery can be solved before the book ends. My comprehention of this book was okay and I saw some of the clues towards the end of the book yet missed the same clues at the start. If you want to know what the clues are then read The Westing Game and I hope you will enjoy the book!
Based on your description, I get the impression that the book is quite enigmatic.