The Riddles of Mulberry Island

While out fishing one bright summer day, fifteen-year-old Tommy Oakley is startled to spy what appears to be a giant fish surfacing in the inlet near Mulberry Island. Confused and a little fearful, he returns to Bayside, the tiny village where he lives, and recruits Wendy to help him solve the mystery.

A few nights later, Tommy goes camping with his best friend John, and they're alarmed to see ghostly lights floating above the water and movement inside the island's abandoned mansion.

Everyone...