NCW Libraries

Frank and Joe Hardy are determined to bring to justice the vicious criminals who kidnapped their detective father while he was investigating sabotage of a road-building project in the Kentucky wilderness. After Mr. Hardy's amazing escape, the boys pick up a clue -- the word "Felix" mumbled by their sick father in his delirium. When they discover that the dossier of a notorious ex-convict has been stolen from Mr. Hardy's files, the two young sleuths...

The Hardy boys dial a wrong number, get the Pentagon, and suddenly find themselves in a dangerous adventure involving national security. Frank and Joe Hardy become involved in a case affecting national security when Joe dials a wrong telephone number and gets the Pentagon. Two words -- "Bombay boomerang"--That the boys hear before the line goes dead plunge them into a whirlpool of danger and intrigue. At the same time, their father is investigating...

While searching in Iceland for a missing sailor sought by an insurance company, the teen-age detective brothers uncover a plot threatening the life of a United States astronaut and the secrets of NASA's moon project.

In trying to trace a missing will, detectives Frank and Joe Hardy trap a dangerous criminal who is willing to risk all--including murder--for money.

The Hardy brothers must dismantle a dangerous crime gang in this first book of a fresh approach to a classic series. Teenagers Frank and Joe Hardy are supposedly retired from their detective work. But there is a new mystery in Bayport that needs their investigative expertise, and fast! Starting with a bank heist, a series of alarming pranks have popped up around Bayport. Ultimately harmless, the pranks turn out to be the work of Seth Diller, an amateur...

Detective brothers Frank and Joe work to solve a muddy mystery when the spring break Mud Bud Run is canceled due to a frog infestation.

When a two-hundred-pound sea turtle goes missing from the Bayport Aquarium, Frank and Joe Hardy investigate, discovering a network of underground tunnels hidden beneath Bayport that is aiding a sinister smuggling ring.

Bayport Elementary is throwing a fundraiser so they can go on an end-of-the-year trip. Ellie Freeman's parents have volunteered their house for the event, and neighbors have donated all sorts of prizes to be raffled off including movie tickets and gift certificates to Fun World. But the best prize of all is a brand-new ZCross50000, a video game system that every kid has been drooling over. But sometime during the event, the ZCross goes missing. Can...

The owner of a gold pharaoh's head claims it was aboard the freighter Katawa, but suspicions arise that he is trying to defraud the shipping line's insurance company.

First published in 1928, now public domain in the USA and Canada, The Missing Chums is the fourth book in the Hardy Boys series. Follow Frank and Joe Hardy as they grapple with the unexplained disappearance of their closest friends, Chet and Biff, during a motorboat trip. The stakes are high, as Baldy Turk's gang think they've kidnapped Frank and Joe and, in a letter received by the Hardy Boys' Aunt Gertrude, are demanding ransom for their return....