Frank and Joe race against time to retrieve a scientist’s top-secret invention before thieves get their hands on it. But the young detectives soon discover that they are involved in a mystery far greater in scope than just safeguarding the invention. When Joe is kidnapped, this incident starts Frank of on a chase that could end disastrously for him and his pals.

A mystery writer's daughter sets out to find her missing father and, along the way, begins to understand the loneliness that has gripped them both since her mother abandoned them years before.

"Trying to communicate with his human owner (and detective partner) can be frustrating for King the golden retriever as he uncovers clues in a missing dog case."--

When a diphtheria epidemic hits her 1840 village, thirteen-year-old Jessie discovers it is actually a 1995 tourist site under unseen observation by heartless scientists, and it's up to Jessie to escape the village and save the lives of the dying children.

When their town is rocked by a series of baby kidnappings, Teo and her friend Logan spend their summer investigating the disappearances and set off to rescue the missing babies. When her small town is rocked by a series of baby kidnappings, Teo vows to spend her summer break solving the mystery, and convinces her friend Logan who would much rather spend his vacation relaxing to help. Their search for answers soon leads them to the woods at the edge...

Nancy Drew and the Clue Crew investigate when circus acts are sabotaged.

SUMMARY: The Hardy boys go to the Pocono Mountains to help a friend of their father find out what is behind the mysterious happenings at Black Hollow, and in the process help their father solve a case involving a ring of thieves.

In this explosive follow-up to the Edgar Award finalist, Havana Lunar, Dr. Mano Rodriguez takes an undercover assignment to the most dangerous city in Latin America: Miami. During the summer of 1997, a series of bombings terrorize Havana hotels. The targets are tourists, and the terrorists are exiles seeking to cripple Cuban tourism and kill the Revolution. After Mano finds himself helpless to save one of the victims, his nemesis Colonel Emilio Perez...

A compilation of twenty mystery stories written by such American authors as Mary Higgins Clark, Steve Yarbrough, and Joyce Carol Oates.

When both a classmate's DIY robot and the class hamster go missing, Detective Wednesday Nadir and her service dog, Woof, must use the scientific method to solve two cases at once.