39 clues

39 clues is an adventure/scavenger hunt series about two siblings , Amy and Dan. When their grandmother passes away they are given the choice between 1 million dollars and a clue to a 'treasure'. The Cahill family is huge, and some of the other participants at the funeral choose to start on the search for the 39 clues that will lead to X. There are 6 other teams that Dan and Amy must compete against.