Blue's Big Mystery
- Episode aired Sep 25, 2000
- TV-Y
- 25m
Something very mysterious has happened - somebody built a fort in the backyard. But who? We become Blue's Clues detectives as we hunt for clues to lead us to the mystery builder.Something very mysterious has happened - somebody built a fort in the backyard. But who? We become Blue's Clues detectives as we hunt for clues to lead us to the mystery builder.Something very mysterious has happened - somebody built a fort in the backyard. But who? We become Blue's Clues detectives as we hunt for clues to lead us to the mystery builder.