The Aldens climb a mountain and find a mystery! The hike up Old Flat Top was only supposed to take a day, but a dangerous rockslide changes everything to reveal a hidden cave that just may hold a legendary treasure!

The Alden children visit Mystery Ranch, a man in a blue hat appears, Mike's house burns down, and the uranium mine is in danger.

Hoping to become the greatest detective that ever grew, Inspector Flytrap, a Venus Flytrap, and his assistant, Nina the Goat, investigate "big deal" mysteries at an art museum, a cookie shop, and a garden.

Visiting a re-creation of a frontier town where they enjoy many cowboy-themed activities, the Aldens are on the case when a vandal commits dangerous pranks that threaten to ruin the Wild West show

A follow-up to The Trouble with Chickens finds search-and-rescue dog J.J. struggling with jealousy over Moosh's friendship with a fashionable new neighbor, a situation that is complicated by a raiding possum and questions about the neighbor's integrity.

Selinsgrove is in the grip of alien fever because people saw a UFO, but nine-year-old reporter Hilde is skeptical about aliens--however when she and her photographer sister Izzy find evidence that something crashed near Grove Pond they are intrigued, (and nervous), and determined to investigate the story for Hilde's newspaper, the Orange Street News.

Nine-year-old Hilde Lysiak is an aspiring reporter with her own newspaper, the Orange Street News, and she is investigating break-ins and missing baked goods--and with the help of Zeus, a little dog with a big bark, she intends to track down the thief who is trying to steal a win in the Bake-Off Bonanza, one of Selinsgrove's biggest events.

A hard-bitten former search-and-rescue dog helps solve a complicated missing chicken case.

"The houses of all Three (not-so- ) Little Pigs were broken into and ransacked, and the Pigs are squealing for justice. So Prince Tyrone, ruler of Fairylandia, drags in the obvious suspect: Wolfgang. The lone wolf has big teeth, sharp claws, no alibi -- and a single day to find the real culprit and clear his big bad name. When Wolf (reluctantly) teams up with the fourth Little Pig to crack the case, the Big Bad Detective Agency -- and an adventure...