- 1
The Case of the Wandering Water / The Case of the Mysterious Melody
Someone -- or something -- is stealing water in Acorn Springs. A mystery singer in the woods matches Millie's voice in perfect harmony.
- 2
The Case of the Suspicious Snowflakes / The Case of the Missing Instrument
- 3
The Case of the Absent Acorns / The Case of the Slippery Sticks
- 4
The Case of the Bashful Ball / The Case of the Pond Monster
- 5
The Case of the Reckless Raven / The Case of the Friendly Oak
- 6
The Case of the Tall Tail / The Case of the Shooting Star
- 7
The Case of the Flying Fish / The Case of the Soggy Sculpture
- 8
The Case of the Super Sled / The Case of the Snowy Coat
- 9
The Case of the Clumsy Crane / The Case of the Snowy Secret
- 10
The Case of the Homemade Holiday / The Case of the Deputy Detectives