A pitbull is a Clue hunter's best friend. This pitbull Arnold, belongs to the Holt family. Eisenhower Holt; his wife, Mary-Todd; and their three kids, Hamilton, Madison, and Reagan, are traveling around the world in search of 39 Clues that lead to a great power. The Holts are the strongest Clue-hunting team out there--as rough and tough as a family of rhinos. But if you manage to get past the Holts . . . well, then, you have to deal with Arnold. Grr.
A picture of Hamilton walking Arnold.
Preceded by: Card 411: Spy Photo
Followed by: Card 413: Ninja Boy