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Episode 1.
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Episode 2.
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Episode 3.
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Episode 4.
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Episode 5.
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Episode 6.
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Episode 7.
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Episode 8.
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Episode 9.
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Episode 10.
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Episode 11.
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Episode 12.
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Episode 13.
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Episode 14.
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Episode 15.
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Episode 16.
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Episode 17.
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Episode 18.
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Episode 19.
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Episode 20.
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Episode 21.
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Episode 22.
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Episode 23.
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Episode 24.
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Episode 25.
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Episode 26.
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Episode 27.The Totally Fishy Mystery
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Episode 28.The Radio Message Mystery
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Episode 29.The Numbered Papers Mystery
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Episode 30.The Sour Milk Mystery
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Episode 31.The Delayed Delivery Mystery
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Episode 32.The Busytown Fairies Mystery
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Episode 33.The Mystery of the Lost Bag
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Episode 34.The Flat Tire Mystery
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Episode 35.Huckle Unlocks a Mystery
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Episode 36.The Messy Car Mystery
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Episode 37.The Achoo Mystery
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Episode 38.The Missing Laundry Mystery
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Episode 39.The No News Today Mystery
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Episode 40.The Big Tooth Mystery
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Episode 41.The Big 10 Mystery
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Episode 42.The Whistle Blower Mystery
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Episode 43.The Mystery Invitation
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Episode 44.A Spoon Full of Mystery
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Episode 45.The Whoop Whoop Whoop Mystery
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Episode 46.The Missing Mayor Mystery
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Episode 47.The Apple Orchard Spaceman Mystery
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Episode 48.The Pick and Run Mystery
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Episode 49.The Sleepytown Mystery
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Episode 50.The Mystery of the Switched Cars
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Episode 51.The Admiral Hornblast's Nameplate Mystery
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Episode 52.The Secret Spy Ring Mystery