While searching for the guard end of a broken saber that will solve one mystery, the Hardy brothers become involved with a gang of bank robbers.

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.

A young Canadian visitor helps the Alden family solve a mystery involving a lost coin collection.

While trying to recover a set of stolen parchment paintings, Nancy Drew becomes involved in tracking a kidnapper and extortionist.

The solutions to ten mysteries solved by Leroy "Encyclopedia" Brown are given in a separate section challenging the reader to match wits with the ten-year-old mastermind of Idaville's war on crime.

The solutions to 10 mysteries solved by Leroy "Encyclopedia" Brown are given in a separate section challenging the reader to match wits with the 10-year-old mastermind of Idaville's war on crime.

New York Times Bestseller: The murder of the secretary of state in the executive mansion sparks a mystery with “a superb denouement” (Time).
 
In a city where the weapon of choice is usually gossip, the strangling of Secretary of State Lansard Blaine in the Lincoln Bedroom is a gruesome first. White House counsel Ron Fairbanks is ordered to investigate. There are persistent rumors that the secretary...

Also published by Puffin Books, 2002. Cam uses her photographic memory to find a shopping list that her dad lost at the library.

The Hardy boys and their father solve a mystery involving inexplicable crashes of highspeed race cars being used to test an experimental turbine motor.

Asked to locate a stolen necklace of unusual value, Nancy soon discovers that strange and dangerous people are responsible for the theft.