|Card 250: Sneaky Dan|
|Where To Get This Card:||Card Pack 4|
|Preceded By:||Card 249: Madeleine's Book|
|Followed By:||Card 251: Florence Nightingale|
"Dan Cahill barely remembers his parents. They were killed in a fire when he was only four years old. However, the hunt for the 39 Clues made him feel closer to them. He's finishing the task they died trying to complete. Dan and his sister, Amy, have uncovered a lot of information about Hope and Arthur, but there are still secrets that would shock them. Like what's hidden inside their mother's grave."