The Hardy Boys: The Hidden Theft Hints

How can I open the grandfather clock?

  • 1 of 4: You're not going to be able to open it until you've "unlocked" another puzzle.
  • 2 of 4: Did you manage to crack Dougal's Chinese puzzle box yet?
  • 3 of 4: Once you have, you'll have the elaborate rod from inside.
  • 4 of 4: This rod is, in fact, a key to open the grandfather clock.