Henry, Jessie, Violet, and Benny Alden are spending a week on a houseboat! Throughout the journey, the children have the feeling they are being w

"Henry, Jessie, Violet, and Benny are spending the summer on a houseboat! Throughout the journey, the children have the feeling they're being wat

"The Aldens are making the journey to their Aunt Jane's house for an overnight bicycle trip. On their first night, though, they're caught in a ra

"The Aldens are making the journey to their Aunt Jane's house for an overnight bicycle trip. On their first night, though, the children are caugh

When the old man who lives in Rourke Castle dies mysteriously, troubletwister twins Jack and Jaide Shield find themselves drawn into a search for

On her first day in New York City with her younger brother, Kevin, twelve-year-old Lexi overhears thieves discussing where to hide stolen jewels,

While on bicycle trip to their aunt's farm, the four Aldens help solve a mystery.

The Alden children have an adventure as they journey along with the Little North Railroad in two cabooses rented for the summer by their grandfat

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

A family, snowbound in a vacation cabin, discovers adventure in surrounding wild life, three children they find in the snow, and a search for a l

Henry, Jessie, Violet, and Benny are spending a week on a houseboat! Throughout the journey, the children have the feeling they are being watched

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 vio