Dog detectives Clancy and Lu must decipher a number of secret code languages and messages in order to discover where in the aquarium thieves have hidden a stolen sack of jewels.
Best friends Jennie and Beth are all set to enjoy their summer vacation with Sam, the sheepdog. But how could they know that the house Jennie's family has rented was built long ago by a bloodthirsty pirate!.
Sam the dog detective is anxious to sniff out another mystery when she sees strange lights in a nearby field and jumps to the conclusion that they must be alien ships.
During a storm, Meg's brother loses a family heirloom and young detective Meg sets out to find it. The reader is invited to search the pictures for key clues to solve the case.
The great detective Seymour Sleuth and his photographer Muggs travel to Borneo to help find the legendary Black Flower of Sumatra, a possible cure for the hiccups.
With the help of her dog, Jenny spends her birthday investigating a bicycle theft and wondering why no one seems to remember it is a special day for her.
