Blue's Clues S03E17 - Blue's Big Mystery
Blue's Clues (1996)
S03E17 Blue's Big Mystery
Episode Overview
Someone is constructing a fort in the backyard of the Blue's Clues house, but we can't figure out who it is. In this episode, we don our detective hats and put our reasoning skills to the test. A mystery awaits us! Join us as we dive into the investigation, with some assistance from Mr. Salt and all our pals.