S4 E1: The Spider's Stolen Silk

S4 E2: The Mystery in the Snow Maze

S4 E3: The Case of the Stinky Swamp

S4 E4: The Case of the Talking Tree

S4 E5: The Trail of the Tuatara

S4 E6: The Disaster at the Dust Spa

S4 E7: The Mysterious Swamp Rats

S4 E8: The Vanishing of Mr. Blue

S4 E9: The Bat Who Couldn't Remember

S4 E10: The Hidden Hitchhiker