The Best Sibling Detectives Books for Kids

Summary: The Alden siblings embark on a summer houseboat adventure, only to find themselves shadowed by a mysterious black car at every stop. As they navigate the river, they must unravel the secret behind their pursuer's relentless chase. What hidden treasure or secret could be aboard their boat? Join the Boxcar Children in a thrilling quest filled with suspense and intrigue, where every dock brings new clues and dangers. Can they solve the mystery before it's too late?

Summary: Xena and Xander Holmes discover they're descendants of Sherlock Holmes and inherit his unsolved casebook. Their first challenge: a century-old mystery of a vanished painting. Can these modern-day sleuths succeed where their legendary ancestor failed? With the aid of twenty-first-century technology, they dive into a world of intrigue and secrets. Will they uncover the truth, or will the mystery remain unsolved? Join the adventure in this thrilling start to a new mystery series.