While trying to help a friend out of a difficulty, teenage detective Nancy Drew has a perilous experience in and around a deserted bungalow.

When Nancy Drew and her friends go to a lake in New York to investigate reports of a woman gliding over water, they discover a treasure underwater.

Nancy Drew arrives in Phoenix, Arizona, eagerly looking forward to a fun-filled vacation at Shadow Ranch, but abruptly finds herself involved in a baffling mystery. The ranch is being haunted by an unknown enemy. Local people believe that the ghostly animal is carrying out the curse of Dirk Valentine, the romantic outlaw who was killed many years ago at Shadow Ranch, where he had gone to fulfill a promise to his sweetheart. Aided by her friends Bess...

Thea Stilton returns to her old school, Mouseford Academy, to teach a course in adventure journalism, and investigates a mystery involving a strange inscription and a missing person along with five female students.

When the costume for the school's mascot is destroyed, the members of Club CSI are determined to find the culprit before anyone else can solve the case.

"When Hayley gets the lead role in a new TV show called Sadie solves it, she's so excited...even if there are rumors of hauntings surrounding the Silver Screen Studios. It's LA, she thinks--there are ghost stories everywhere! But to her surprise, strange things actually start happening as production ramps up. Lights flicker, cold blasts of air come out of nowhere, and one day the electricity is cut to the studio entirely with no clear cause. Can Hayley...

"The Secret of the Old Mill" is the third installment in the "Hardy Boys" series of mystery stories. Written by Canadian author Charles Leslie McFarlane and published under the pen name, Franklin W. Dixon, in 1927, "The Secret of the Old Mill" ranks as one of the best books in the series. In this thrilling installment, readers find the Hardy brothers, Joe and Frank, investigating the mysterious appearance of counterfeit money in their small town of...

After learning about Sherlock Holmes, Humphrey the classroom hamster follows clues to try to discover why Mrs. Brisbane is gone and Mr. E, a fun but not very educational substitute, is taking her place in Room 26 at Longfellow School.

Hannah and her Club CSI friends investigate when her dog, Molly, disappears from the backyard shortly after winning the neighborhood dog show.

Avery Donaldson and her three best friends are happy to be at Storm Cliff Stables for the summer, especially since gold medalist Anna Wainwright is supposed to be there to give riding lessons--but Anna is nowhere to be found, and Avery is convinced something has happened to her hero.