NCW Libraries

"Hidden behind the wall of their guest room, a mysterious journal leads the Aldens on a search for a valuable collection"--

The Alden children have another mystery to solve when they visit a castle and must figure out which of the guests has stolen the Stradivarius violin.

"The Aldens are spending their first week of summer at Camp Quest in Colorado. The children are excited to learn about fossil hunting and paleontology from renowned scientist Dr. Iris Perez. But strange events at the camp make them wonder if the legends of a bigfoot-like creature roaming the valley might be more fact than fiction."--Provided by publisher.

Benny's friend accompanies the Aldens to the South Seas for a vacation on a supposedly deserted island where they find an unusual mystery.

The Alden family rents a houseboat to drift down the river, and encounters a mystery in the little towns along the river, involving a fast black car.

"The Aldens visit a dinosaur dig in Montana and soon become involved in a mystery involving missing dinosaur bones"--

The Aldens go in search of mysterious creatures in the rain forests of Brazil.

On a camping trip to Arizona with their grandfather, the Alden children search for a lost gold mine.

The Aldens are helping out at a doughnut shop, but when a rival store opens across town, strange events follow, and the children have a mouthwatering mystery to solve!

When the Aldens visit a university campus, they must solve a mystery involving an old library whose stone gargoyles seem to move on their own.