The Westing Game (1997)
About the Movie: To her surprise, Turtle Wexler and her mother are asked to attend the reading of a multi-millionaire's will. The fun begins when she and the other heirs are told that the one who can unravel a series of clues will inherit the $20 million estate. Turtle's dogged tenacity helps her unravel the clues. In the end, she learns that a kind heart is more valuable than any amount of money.
From Me: Loved it! It's like a little kid's version of Clue and I was stumped until the very end! Even though it's a dated movie, it's worth watching!
This is another movie that I learned was a book first!