Season 3 · Episode 17

Blue's Big Mystery

• Release date
• September 25, 2000
• Runtime
• 30 min

There's somebody building a fort in the backyard of the Blue's Clues house, but we have no idea who it is. In this episode, we put on our detective caps and logical-thinking skills. There's a mystery to be solved. Come along as we investigate, with a little help from Mr. Salt and all of our friends.