While helping run Jerry Taylor's general store, the Alden children investigate his mysterious employee Nancy.

Fenton Hardy, the famous private detective and father of the Hardy Boys, asks his sons to help him with his latest case involving a criminal named Snattman and the illegal drug trade smuggling of stolen drugs. Hardy directs Frank and Joe to a house on the cliff, whose location overlooking Barmet Bay offers an excellent vantage point to watch for smugglers. The Hardys are tricked into the house by cries for help, and are trapped for a short time in...

Alistair Hemsworth produces a real and very dreadful dragon as Sherlock Holmes and Irene Doyle celebrate Irene's sixteenth birthday. But then the magician is arrested by Inspector Lestrade and his son because they have found blood in Hemsworth's secret workshop and Hemsworth's rival has disappeared. There is no body. Has Hemsworth killed the man since he has also stolen his wife.

Five high school students from a wealthy neighborhood are kidnapped while on their way home in the school bus and try to find a way to escape their captors while their parents scrape to meet the ransom demands.

Someone on posh Callander Square will kill to keep a secret in this “superior” mystery from the New York Times–bestselling author of Twenty-One Days (The San Diego Union-Tribune).
When two dead infants are dug up in the Callander Square gardens, the upper-class residents dismiss the burials as the desperate act of a low-born girl and resent the intrusion of Inspector Thomas Pitt into their well-ordered...

The Aldens try to help a visiting Russian gymnast who is surrounded by mysterious people and events and who seems to have a secret.

Spy thriller set in West Berlin where Englishmen and Germans are cooperating to flush out dangerous Nazis who are still at large years after World War II.

While learning detective skills at a sleep-away camp, Dink and his friends undercover a real mystery involving stolen paintings.

Seven-year-olds Bradley, Brian, Nate, and Lucy make observations and gather clues that convince them that their older siblings, cousin, and animals have been captured by hungry space aliens.

Someone is trying to put Aunt Jane's motel out of business, but the Alden children aren't going to let that happen.