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The Three Investigators Series
E-Books > The Three Investigators > The Three Investigators Series
Jupiter, Pete, and Bob live in Rocky Beach, a fictional southern California coastal town described as 10 to 12 miles from Hollywood and 15 miles from downtown Los Angeles. Jupiter's family owns and operates the Jones Salvage Yard ("the Yard"), where the team's headquarters is hidden in an old trailer, which itself is hidden amid the "junk." There are several ingenious secret entrances (ie. Tunnel Two, Door Four...etc). The trailer's equipment includes a telephone, a darkroom, a filing cabinet, and a workshop in which Jupiter assembles devices, mostly from discarded items found in the junk yard, which help the Investigators in their detective work. The team often has to pay for what they take by working for Aunt Mathilda, a hard taskmaster who believes "idle" boys should be put to work.
Jupiter has designed a business card to intrigue their potential clients, memorable to readers particularly for its three question marks. These potential clients often ask what the question marks stand for, giving Jupiter an opening to impress them with his explanation. The boys' patrons usually did no more than introduce them to cases, meet again with them at the end of a particular adventure, and sometimes refer them to specialists such as a supernatural. At no point is it ever suggested that the patrons provided the Investigators funding in their work.
The Three Investigators solve cases by doing research (Bob's speciality), active observation (Pete's speciality), and clever deduction (Jupiter's speciality). Though the boys are both younger and lack the resources and connections of fellow fictional detectives The Hardy Boys and Nancy Drew, they have found ways to compensate or ignore these handicaps. Though too young to drive, the Three Investigators soon acquire reliable transportation in the form of a Rolls Royce limousine driven by British chauffeur Worthington. Jupiter won the use of the limousine for "thirty days, of twenty-four hours each" after winning a promotional contest held by the rental agency, soon before beginning their investigation of The Secret of Terror Castle. Despite Jupe's argument that the wording "thirty days of twenty-four hours each" meant that the boys should have the use of the Rolls Royce for the equivalent of 30 full days (or 720 hours), the Rent-N-Ride Auto Agency briefly ended their use of the limo in The Mystery of the Fiery Eye. Fortunately, a grateful client arranged for the boys to have access to the car whenever they needed it. Nevertheless, although Worthington became a confidante and a supporter of the boys' work, the limo's use grew rare in later books.
After proving their reliability, the Investigators received a green card from Rocky Beach police chief Samuel Reynolds, which identified them as junior deputies cooperating with the Rocky Beach police. They used this credential occasionally to convince others they were serious detectives.
The following list of books are available to be downloaded directly from this site at no charge. To the best of our knowledge they are all in the public domain and no rights are infringed by their inclusion here. If this is not the case, please notify us and we will immediately remove any offending title.
| Sr. | Image | Title | Download | |
| 1 | Click For Image | The Secret of Terror Castle | Download | Details |
| 2 | Click For Image | The Mystery of the Stuttering Parrot | Download | Details |
| 3 | Click For Image | The Mystery of the Whispering Mummy | Download | Details |
| 4 | Click For Image | The Mystery of the Green Ghost | Download | Details |
| 5 | Click For Image | The Mystery of the Vanishing Treasure | Download | Details |
| 6 | Click For Image | The Secret of Skeleton Island | Download | Details |
| 7 | Click For Image | The Mystery of the Fiery Eye | Download | Details |
| 8 | Click For Image | The Mystery of the Silver Spider | Download | Details |
| 9 | Click For Image | The Mystery of the Screaming Clock | Download | Details |
| 10 | Click For Image | The Mystery of the Moaning Cave | Download | Details |
| 11 | Click For Image | The Mystery of the Talking Skull | Download | Details |
| 12 | Click For Image | The Mystery of the Laughing Shadow | Download | Details |
| 13 | Click For Image | The Secret of the Crooked Cat | Download | Details |
| 14 | Click For Image | The Mystery of the Coughing Dragon | Download | Details |
| 15 | Click For Image | The Mystery of the Flaming Footprints | Download | Details |
| 16 | Click For Image | The Mystery of the Nervous Lion | Download | Details |
| 17 | Click For Image | The Mystery of the Singing Serpent | Download | Details |
| 18 | Click For Image | The Mystery of the Shrinking House | Download | Details |
| 19 | Click For Image | The Secret of Phantom Lake | Download | Details |
| 20 | Click For Image | The Mystery of Monster Mountain | Download | Details |
| 21 | Click For Image | The Secret of the Haunted Mirror | Download | Details |
| 22 | Click For Image | The Mystery of the Dead Man's Riddle | Download | Details |
| 23 | Click For Image | The Mystery of the Invisible Dog | Download | Details |
| 24 | Click For Image | The Mystery of Death Trap Mine | Download | Details |
| 25 | Click For Image | The Mystery of the Dancing Devil | Download | Details |
| 26 | Click For Image | The Mystery of the Headless Horse | Download | Details |
| 27 | Click For Image | The Mystery of the Magic Circle | Download | Details |
| 28 | Click For Image | The Mystery of the Deadly Double | Download | Details |
| 29 | Click For Image | The Mystery of the Sinister Scarecrow | Download | Details |
| 30 | Click For Image | The Secret of Shark Reef | Download | Details |
| 31 | Click For Image | The Mystery of the Scar-Faced Beggar | Download | Details |
| 32 | Click For Image | The Mystery of the Blazing Cliffs | Download | Details |
| 33 | Click For Image | The Mystery of the Purple Pirate | Download | Details |
| 34 | Click For Image | The Mystery of the Wandering Cave Man | Download | Details |
| 35 | Click For Image | The Mystery of the Kidnapped Whale | Download | Details |
| 36 | Click For Image | The Mystery of the Missing Mermaid | Download | Details |
| 37 | Click For Image | The Mystery of the Two-Toed Pigeon | Download | Details |
| 38 | Click For Image | The Mystery of the Smashing Glass | Download | Details |
| 39 | Click For Image | The Mystery of the Trail of Terror | Download | Details |
| 40 | Click For Image | The Mystery of the Rogues' Reunion | Download | Details |
| 41 | Click For Image | The Mystery of the Creep-Show Crooks | Download | Details |
| 42 | Click For Image | The Mystery of Wrecker's Rock | Download | Details |
| 43 | Click For Image | The Mystery of the Cranky Collector | Download | Details |
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