Ep. 1. "The Mystery of the Mumbling Mummy"/"The False Alarm Mystery"

Ep. 2: "The Sandcastle Squasher"/"The Strange Ski Tracks Mystery"

Ep. 3: "The Mislaid Sketchbook Mystery"/"The Hot and Cold Mystery"

Ep. 4: "The Missing Cookie Coupon Mystery"/"The Mystery of the Broken Boat"

Ep. 5: "The Disappearing Dolly Mystery"/"The Vanishing Vehicle Mystery"

Ep. 6: "Now You See It, Now You Don't"/"The Mystery of the Missing Pirate Gold"

Ep. 7: "Mysterious Coloring T-Shirt"/"The Metal Finger Mystery"

Ep. 8: "The Mystery of the Lost Camera"/"The Jellybean List Mystery"

Ep. 9: "The Vanishing Hopscotch Mystery"/"The Hidden Treasure Mystery"

Ep. 10: "The Busytown Lake Monster Mystery"/"The Bad Driver Mystery"

Ep. 11: "The Flattened Field Mystery"/"The Flying Potatoes Mystery"

Ep. 12: "The Red Spot Painter Mystery"/"The Teeny Weeny Piano Mystery"

Ep. 13: "The Lost Key Mystery"/"The Door Knocker Mystery"

Ep. 14: "The Totally Fishy Mystery"/"The Radio Message Mystery"

Ep. 15: "The Numbered Papers Mystery"/"The Sour Milk Mystery"

Ep. 16: "The Delayed Delivery Mystery"/"The Busytown Fairies Mystery"

Ep. 17: "The Mystery of the Lost Bag"/"The Flat Tire Mystery"

Ep. 18: "Huckle Unlocks a Mystery"/"The Messy Car Mystery"

Ep. 19: "The Achoo Mystery"/"The Missing Laundry Mystery"

Ep. 20: "The Not News Mystery"/"The Big Tooth Mystery"

Ep. 21: "The Big 10 Mystery"/"The Whistle Blower Mystery"

Ep. 22: "The Mystery Invitation"/"A Spoon Full of Mystery"

Ep. 23: "The Whoop Whoop Whoop Mystery"/"The Missing Mayor Mystery"

Ep. 24: "The Apple Orchard Spaceman Mystery"/"The Pick and Run Mystery"

Ep. 25: "The Sleeptown Mystery"/"The Mystery of the Switched Cars"

Ep. 26: "The Admiral Hornblast's Nameplate Mystery"/"The Secret Spy Ring Mystery"