 |
|
|
 |
|
|
|
|
| 13. THE MARK ON THE DOOR |
| FOREWORD |
| IN their motorboat the Sleuth Frank and Joe Hardy search Barmet Bay for a dangerous stranger who has stolen a valuable boat. Suddenly, in the eerie fog, they spot the craft drifting aimlessly out to sea. What happens next starts the young detectives and their pal Chet Morton on an intriguing adventure that takes them to Mexico and into the comparatively unexplored desert and mountain regions of Baja Cali- fornia. The search for the meaning behind a mysterious symbol that terrorizes the people of an entire village, a daring escape from a submarine, perilous encounters with a band of renegade Indians, an unusual smug- gling operation - all combine to make this one of the Hardys' most exciting cases. |
| Raymond Dalrymple, a banker from a nearby town, wants Fenton Hardy to take on his case. When Mr. Hardy is unavailable, Dalrymple reluctantly agrees to let Frank and Joe try their hand at solving the mystery of the threatening notes which have been left for Mr. Dalrymple in a secret room, equipped with a time-lock, at the old Purdy estate, which the banker owns. An old friend, Hurd Applegate, seeks the help of the Hardys in recovering his stolen jade collection. A man posing as a jewelry dealer had made off with the valuable figurines from the Tower Mansion. Surprisingly, Mr. Applegate believes the thief to be Mr. Dalrymple! The Bayport Police are searching for a gang of harbor thieves operating around the Bayport waterfront. The thieves have been traced to the general vicinity of the Purdy place, where the trail disappears! The Hardy boys find themselves involved with all three mysteries which seem to have the Purdy grounds as a common denominator. Are the three cases connected? What is the secret of the abandoned house? Follow the boys' amazing discoveries. |
| A plot to steal a top-secret instrument vital to the United States space program poses a challenging case for Frank and Joe Hardy. The whereabouts of their famous detective father is a mystery, so Frank and Joe are on their own to foil the plotters. After rescuing a South American stowaway who mut- ters a cryptic warning about "Footprints," then flees, the boys learn they are up against a ruthless espionage ring. The nest day Frank and Joe discover that documents belonging to Mr. Hardy are missing, and, noting strange footprints under a window, they suspect the stowaway. The young detectives' search for the diabolical master- mind of the "Footprints" spy ring takes them on a flight to a group of islands off the coast of South America. Here they risk the wrath of a cruel dictator, and also make a grisly discovery deep in the jungle. During a spine-chilling vigil in a cemetery, followed by entrapment in the flooded compartment of a wrecked ship, the courage and resourcefulness of the Hardys and their pal, Chet Morton, are tested to the utmost. Hardy Boys fans will find this exciting tale crammed with suspense, intrigue, and action. |
| Bart Worth, the owner of a small-town newspaper in Georgia, requests the Hardy boys help in uncovering information needed to win a lawsuit. A story had leaked out in the paper that, while believed to be true, slanders the prominent Blackstone family. Samuel Blackstone had filed the suit which threatens to close down the Larchmont Record, unless Frank and Joe can find lost ancestral documents backing the paper's claims. The Hardy boys, along with their friend Chet Morton, travel to Larchmont, Georgia to investigate on behalf of the newspaper. The Hardys learn of an ancient family feud between the Blackstones and the Rands. The only living heirs, Samuel Blackstone and Professor Ruel Rand are both searching for the lost family treasure as well, so the old fight is alive and well! The boys discover clues to a secret harbor which used to be part of a pond on the Blackstone/Rand estates. During their search for the hidden papers, Frank and Joe encounter a sinister group trying to thwart their efforts, hungry crocodiles, a hurricane, and a man-sized swamp monster! |
| Racing cars! Mystery! Adventure! These elements com- bine to give Frank and Joe Hardy one of the most dan- gerous and intriguing cases of their careers. It all starts when their father, Fenton Hardy, is en- gaged by an experimental race car and motor designer to investigate a series of mysterious accidents. Three of his drivers have crashed because the windshields of their cars were suddenly crazed, thus cutting off forward vision. Frank and Joe uncover one slim clue. Each of the drivers had seen a signpost marked DANGER shortly before his accident. The young detectives investigate, only to discover that the signposts have vanished. What happened to them? And what sinister purpose did they serve? The attempted theft of a secret experimental motor and the kidnapping of a famous race horse are part of this thrilling case, which proves to be as sinister as the signposts themselves. |
| OVERVIEW |
| FOREWORD |
| OVERVIEW |
| FOREWORD |
| 11. WHILE THE CLOCK TICKED |
| 12. FOOTPRINTS UNDER THE WINDOW |
| 14. THE HIDDEN HARBOR MYSTERY |
| 15. THE SINISTER SIGN POST |
 |
|
 |
 |
 |
 |
 |