The haunted lagoon

"Impossible!" the girls gasped. Louise and Jean Dana stare unbelievingly through the swirling mists in an isolated lagoon. In mid-air floats a fantastic apparition—a full-rigged sailing ship! The next moment, the phantomlike vessel dissolves in the fog.

Never before have the Dana sisters encountered so strange and eerie a situation. Little did they dream, when invited to visit fascinating Chincoteague Island off the Virginia coast, where wild ponies roam, that their carefree vacation would turn into a challenging and exciting mystery.

To find the solution, Louise and Jean must uncover the whereabouts of an ex-sea captain, Tracy Forsythe, whose once proud career was ruined under tragic circumstances during a shipwreck years ago. In their efforts to locate the missing man and help the captain's heartbroken family clear his name, the two young sleuths are thwarted constantly by a sinister enemy who resorts to desperate measures to prevent them from unearthing the truth.

Readers will share many thrilling, spine-tingling moments with the Danas as the girls pursue the baffling trail of clues that leads them to pirate treasure and a startling climax.