By Linda Sue Park
The shadow of a guy in black has fourteen-year-old Amy Cahill and her more youthful brother, Dan, on their around the world look for 39 Clues that result in a very good energy. Amy and Dan understand the guy in black has attempted to kill them. They recognize he is a Madrigal, the main secretive and terrifying staff attempting to find the Clues. Amy and Dan have run demanding and quick, yet they can not get away the guy following them. And now, within the wake of a negative tragedy, he is able to step out of the darkness for his or her ultimate confrontation.