The Train Mystery (S04E19)

S04E01 Big Animal Vet S04E01 The Paul Revere Mystery S04E02 The Spare Parts Mystery S04E02 Steel Mill Worker S04E03 The Skin Deep Mystery S04E03 Cave Biologist S04E04 Buoy Cleaner S04E05 The Robot Mystery S04E05 Cranberry Farmer S04E06 The Art Attack Mystery S04E06 Mud Mineral Excavator S04E07 The Baseball Fan Mystery S04E07 Dirty Jobs of the Big Apple S04E08 The Yearbook Mystery S04E08 Floating Fish Factory S04E09 The UFO Mystery S04E09 Dairy Cow Midwife S04E10 Aerial Tram Greaser S04E10 The Haunted House Mystery S04E11 Turkey Inseminator S04E11 The Moon Rock Mystery S04E12 Ice Salvage Crew S04E12 The Egg Mystery S04E13 Wind Farm Technician S04E13 The Jinxed Campaign Mystery S04E14 Animal Barber S04E14 The Movie Mystery S04E15 Brown Before Green S04E15 The Racetrack Mystery S04E16 Tar Rigger S04E16 The Toy Store Mystery S04E17 Dirty Chip Maker S04E17 The Mystery Under Our Noses S04E18 Sheep Castrator S04E18 The Mystery of The Mice That Roared S04E19 The Train Mystery S04E19 Leech Trapper S04E20 The Big Cheese Mystery S04E20 Dirty Presidents S04E21 Mannequin Factory S04E22 Egg Farm S04E23 Vellum Maker S04E24 Maggot Farmer S04E25 Gourd Maker S04E26 Brown Before Green 2