Sorted on book title (not in series order)

Alfred Hitchcock and The Three Investigators

The Mystery of the Fiery Eye

The Three Investigators must solve an old man's riddle to uncover a great fortune for their friend, Gus. But they're racing against a sinister bunch of treasure hunters who are also hot on the trail. Who will arrive first at the mysterious Fiery Eye?Read more

No in Series: 
7

The Mystery of the Green Ghost

A green ghost oozes through the walls of a crumbling old mansion, leading The Three Investigators to an open coffin and a grinning skeleton wearing a string of priceless Chinese Ghost Pearls. When the ghost disappears--along with the pearls--the sleuths are off on their strangest case ever...Read more

No in Series: 
4

The Mystery of the Screaming Clock

The alarm clock went off with a blood-curdling scream -- the scream of a woman in mortal terror! It sent shivers down Jupiter's spine.

Who could have made such a horrid clock -- and why?

That's what The Three Investigators set out to discover. Their search leads them...Read more

No in Series: 
9

The Mystery of the Silver Spider

The prince of Varania must find the royal badge of office, a jeweled silver spider, in order to be crowned. There's just one problem--the silver spider has been stolen! It's up to the Three Investigators to find the spider and save the prince from his deadly political enemies!Read more

No in Series: 
8

The Mystery of the Stuttering Parrot

Hot on the trail of seven talking parrots that have seemingly vanished into thin air, the Three Investigators are in more trouble than ever. Danger lurks at every turn as they search for the birds, each of whom can quote part of a coded message from a mysterious dead man.Read more

No in Series: 
2

The Mystery of the Talking Skull

It all started with a dollar. One dollar paid at auction by Jupiter Jones for a dusty old trunk that once belonged to The Great Gulliver, a magician who vanished as mysteriously as one of his tricks. The trunk attracts a host of bizarre characters, like Zelda the Gypsy, Three-Finger Munger...Read more

No in Series: 
10

The Mystery of the Vanishing Treasure

Missing: One fabulous, jewel-encrusted belt, once owned by the ancient emperors of Japan. But when The Three Investigators offer their detective services to an official at the Peterson Museum, he throws their business card to the floor in disgust. Chasing thieves is work for men -- not boys...Read more

No in Series: 
5

The Mystery of the Whispering Mummy

When Ra-Orkon, a 3,000-year-old mummy, begins to whisper strange words in an ancient Egyptian tongue, the Three Investigators are determined to find out the facts: Why is he speaking? What is he saying? And how is the horrible curse of Ra-Orkon about to be fulfilled?Read more

No in Series: 
3

The Secret of Terror Castle

Finding a genuine haunted house for a movie set sounds like fun -- and a great way to generate publicity for the Three Investigators' new detective agency. But when the boys arrive for an overnight visit at Terror Castle -- home of a deceased horror-movie actor -- they soon find out how the...Read more

No in Series: 
1