Hal & Harper
The Door Knocker Mystery (S02E26)
The team embarks on a quest to uncover the identity of the mysterious figure responsible for knocking on various doors. As they investigate, they ...
S02E26
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Season 2 Episodes
S02E02 - The False Alarm Mystery
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S02E03 - The Sandcastle Squasher
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S02E04 - The Strange Ski Tracks Mystery
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S02E05 - The Mislaid Sketchbook Mystery
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S02E06 - The Hot and Cold Mystery
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S02E07 - The Missing Cookie Coupon Mystery
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S02E08 - The Mystery of the Broken Boat
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S02E09 - The Disappearing Dolly Mystery
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S02E10 - The Vanishing Vehicle Mystery
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S02E11 - The “Now You See It, Now You Don't” Mystery
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S02E12 - The Mystery of the Missing Pirate Gold
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S02E13 - The Mysterious Color-Changing T-Shirt
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S02E14 - The Metal Finger Mystery
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S02E15 - Mystery of the Lost Camera
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S02E16 - The Jellybean List Mystery
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S02E17 - The Vanishing Hopscotch Mystery
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S02E18 - The Hidden Treasure Mystery
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S02E19 - The Busytown Lake Monster Mystery
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S02E20 - The Bad Driver Mystery
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S02E21 - The Flattened Field Mystery
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S02E22 - The Flying Potatoes Mystery
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S02E23 - The Red Spot Painter Mystery
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S02E24 - The Teeny Weeny Piano Mystery
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S02E25 - The Lost Key Mystery
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S02E26 - The Door Knocker Mystery
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S02E27 - The Totally Fishy Mystery
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S02E28 - The Radio Message Mystery
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S02E29 - The Numbered Papers Mystery
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S02E30 - The Sour Milk Mystery
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S02E31 - The Delayed Delivery Mystery
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S02E32 - The Busytown Fairies Mystery
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S02E33 - The Mystery of the Lost Bag
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S02E34 - The Flat Tire Mystery
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S02E35 - Huckle Unlocks a Mystery
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S02E36 - The Messy Car Mystery
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S02E37 - The Achoo Mystery
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S02E38 - The Missing Laundry Mystery
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S02E39 - The No News Today Mystery
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S02E40 - The Big Tooth Mystery
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S02E41 - The Big 10 Mystery
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S02E42 - The Whistle Blower Mystery
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S02E43 - The Mystery Invitation
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S02E44 - A Spoon Full of Mystery
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S02E45 - The Whoop Whoop Whoop Mystery
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S02E46 - The Missing Mayor Mystery
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S02E47 - The Apple Orchard Spaceman Mystery
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S02E48 - The Pick and Run Mystery
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S02E49 - The Sleepytown Mystery
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S02E50 - The Mystery of the Switched Cars
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S02E51 - The Admiral Hornblast's Nameplate Mystery
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