The gang investigates strange voices in Busytown Museum.

Huckle wants to find out why a smoke alarm keeps going off but there is no fire.

The kids' sand castle gets trampled overnight.

A set of ski tracks runs on either side of a tree.

The gang searches for the owner of a mysterious sketchbook.

A strange temperature drop turns Busytown's summer into winter.

The gang is determined to find out why coupons for free cookies fail to arrive in the mail.

A model boat is mysteriously broken.

Huckle and his pals help Baby Sadie find her lost doll.

The gang wants to find out why cars are disappearing from a parking space.

Huckle, Lowly and Sally set out to discover why their mini putt balls are disappearing.

Gold coins Mr. Fix It found on the beach disappear.

The gang tries to find out why Sally's yellow T-shirt has mysteriously turned green.

The children discover pieces of a large metal hand.

Photographs on a lost camera help Huckle and his pals find the camera's rightful owner.

A jellybean list made by Sally disappears.

Huckle and the gang search for a priceless treasure hidden somewhere.

Huckle and the gang search for a priceless treasure hidden somewhere.

Lowly is convinced there is a monster loose in Busytown Lake.

Huckle and his pals try to track down a bad driver.

A giant circle appears in the middle of a cornfield.

Potatoes drop from the sky in Busytown.

The gang sets out to find out who is painting red spots throughout Busytown-

Huckle and Sally and Lowly try to figure out who would own a tiny piano.

Huckle and his pals help Mayor Fox find the ceremonial key to Busytown.