Two inner-city boys spend the weekend mountain climbing. After straying from the trail, they are trapped in a narrow gorge with two prison escapees and a hungry mountain lion on the loose.
David and his family use his grandfather's time travel machine to go back in time to the Chicago where David is teaching four boys to speak English as he experiences the Chicago World's Fair. .
David and his family use his grandfather's time travel machine to travel to 1853 Ohio, where they assist runaway slaves on their journey north on the Underground Railroad.
Brothers Tim and Josh find themselves alone in the wilderness after surviving a plane crash in which the pilot dies and must make their way back to civilization.
Zack's dad drives him to his new middle school in the bug truck, and his new classmates tease him about his father's pest-control business. How can he handle the hassles?
Judd dreams of becoming a firefighter, but his dad wants him to work on the family ranch. When a city kid with a know-it-all attitude and a motorcycle comes to his valley for the summer, a forest fire breaks out. How will Judd prove himself?
When someone breaks into Coach Taylor's office and steals the money for the new basketball uniforms but leaves a set of footprints behind, its up to Kevin Anderson to solve the crime and expose the thief.
Eve, Gwen, and Maribeth are granted powers by a magical wizard and learn the dangers of getting what you wish for.
When his neighbor Mrs. Sugarman reports seeing a seven-foot tall monster resembling Big Foot in New York City's Central Park, Cody Smith and his friend Maria Romero set out to investigate the sighting.
Determined to identify the large four-legged creature sighted by Abe on a stormy night, the Koots find their first clue to be a hugh paw print.
When Dog, Mr. Dodge's big cat, starts bringing home gifts resembling animal guts, the Koots set out to find the source of the gooey presents.
When strange things begin appearing on the school computers, the Koots set out to find the hackers.
The Koots try to discover who is behind the canned laughter that appears every time something goes wrong for one of the boys.
The Kooties Club solves a mystery involving the theft of a ring.
The Koots try to find answers to unexplained questions about an old car.
When the Koots decide to dig a hole in an abandoned lot big enough to house "The Kooties Club Cave," they are suprised to find an old rusty knife which leads to further excavations to uncover its still hidden victim.
Ty thought he was aware of all of his food allergies, but after he collapses on the sidewalk due to an allergic reaction, the Koots hope to find the cause of his illness by following food clues.
The Koots met on Gabe's front porch. They found out that Mrs. Gomez lost a very old vase, Mrs. Wu is missing a picture and Mrs. Prudy is missing a very old doll. "Wow, three things missing. I think we have a case," Ty said.
Ty and Gabe hear yelling and screaming and someone very bad laughing in apartment A-13.
The boys investigate a new neighbor whom they think has a secret about the past and in doing so learn about Ben Franklin.
The members of the Kooties Club try to figure out who is leaving the "I Love Elvis" signs throughout the neighborhood.
The Koots decide to spy on Mr. Dodge to find the answers to unexplained questions about his blindness, state of health, and family situation.
Returning home after his violin recital, wealthy Philip Thorpe and his father become separated during the Great Chicago Fire in 1871, and Philip tries to find his way home.
In 1777 Massachusetts, after his parents are killed because of their loyalty to Great Britain, eleven-year-old Timothy is taken in by a parson and his wife.
Elizabeth is a girl who might have lived next to the boardinghouse where President Lincoln died after being shot at Ford's Theatre. This book is the story of what Elizabeth saw that fateful night.