This book was really exciting and interesting. It had a lot of action and suspense. It is about two children Amy and Dan Cahill. They are apart of this huge family that includes famous people from our past like Benjamin Franklin, Mozart and other famous people. They are racing to find the 39 clues before all of their other relatives. They make an alliance with their Uncle Alistar who had abandoned them in the beginning. He took them under his wing. They also all made an alliance with their enemy cousins Ian and Natalie. After all this time,they act nice and trustworthy but when they find the next clue, they leave them stranded to die. Uncle Alistar "dies" and abandons them again.
Amy Cahill is shy and likes to be independant.What will happen next? read book #5 to find out!