The 39 Clues Wiki
The 39 Clues Wiki
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Card 403: The Clue Hunter's Best Friend
Number: 403
Branch: Tomas
Type: Agent
Rarity: Common
Puzzle: No
Clue: No
Top Secret: Yes
Where To Get This Card: G69J7X9H9T


A pit bull is a Clue hunter's best friend. This pit bull, 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 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.

Top Secret[]

A photo of Hamilton trying to walk Arnold.