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.

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? Originally published in hardcover beginning in 1964, these classic mystery/adventure stories feature three boys—Jupiter Jones, Pete Crenshaw, and Bob Andrews—who establish a detective firm with the motto "We Investigate Anything!" Perfect for summer reading, these suspenseful action stories will appeal to both boys and girls.

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!

The alarm clock went off with the bloodcurdling scream of a woman in mortal terror! Who could have made such a clock—and why? The Three Investigators immediately set out to discover where the mysterious clock came from. When they come across a run-down house in Hollywood, they find an entire room full of dreadful clocks—and time is running out!

While vacationing on a California ranch, three boys decide to investigate strange wails that come from a mysterious cave where a famous outlaw disappeared.

Hired to discover why a wild-animal farm's tame lion has become unpredictably nervous, three young detectives begin an investigation that uncovers a smuggling operation.

The Three Investigators become involved in witchcraft when they try to rescue a woman from the influence of snake worshipers.

Why did Cameron paint twenty pictures of the shrinking house and where did they go after his death? Three searchers must crack this tough nut if they don't want to disappoint the young countess' trust...

The three young sleuths solve a case of double identity while investigating the legend of Monster Mountain.

When three junior detectives search for a valuable old Spanish sword lost since the Mexican War, the headless statue of a horse yields a clue.