Cody finds himself in danger when he receives a note that warns him of bad luck on his big bike ride. He has to find out who's behind the note and why he is the target.
When Cody, his mom, and his friend Maria arrive in the Florida Keys to house-sit for their friend Sally West, they are warned about a kidnapper at large in the neighborhood who tried to abduct young Angela Gomez.
Cody and his friend Maria find themselves in the middle of several mysteries as they search for a missing emerald necklace.
Cody is involved in another mystery. When the cat keeps vanishing and a mysterious stranger is hanging around, Cody needs to do a little investigating to solve the case.
"I walked across the room and opened the small door. The sound stopped as I peered in. All I could see were some old magazines and a book. As I watched, the book moved! I was scared and wanted to run, but my feet seemed nailed to the floor. I finally reached out and picked up the book and blew dust from it. I felt someone or something next to me once more."
Alice and her brother Louie meet Johnny Boyd when they spend summer vacation with their grandparents on the farm. Louie thinks he saw a ghost and the three children are out to solve the mystery.
During his summer in Hawaii, Kimo repeatedly visits a secret and forbidden beach, ignoring several frightening warning signs. Who is threatening him and why?
To earn money for football camp, Joshua reluctantly becomes a golf caddy and solve a mystery on the course.
Cody Smith and his friends are immersed in mysteries for each of the holidays.
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.
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.
Dad finds a homemade sign on the front door from Amy, a girl in the neighborhood, saying that her dog, Spot, is lost. Danny and Norman decide to become canine detectives and use their noses to search for Spot.