David Cunningham

Renting a lighthouse is unusual, but even more so is an unfriendly boy's peculiar behavior.

The boxcar children uncover a double mystery involving an old friend of Aunt Jane's.

A friendly writer with a metal detector, the mysterious inhabitants of a tower house, and the discovery of a locket in the sand are ingredients for the Aldens' latest mystery.

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

Two brothers take summer jobs at a department store where a series of peculiar events brings them under suspicion.

The Alden children, isolated in a storm at a small bus station, are led into a mystery centering on a polluted river.