With their father jailed for sinking a river boat, Noah Underwood and his younger sister, Abbey, must gather evidence that the owner of this floating casino is emptying his bilge tanks into the protected waters around their Florida Keys home.

Nick and his friend Marta decide to investigate when a mysterious fire starts near a Florida wildlife preserve and an unpopular teacher goes missing.

On a weekend vacation Beth Anderson is unnerved when a stroll on the beach reveals what appears to be a skull. As a stranger approaches, Beth panics and covers the evidence. But when she later returns to the beach, the skull is gone. Determined to find solid evidence to bring to the police, Beth digs deeper into the mystery of the skull-and everywhere she goes, Keith Henson, the stranger from the beach, seems to appear. He claims to be keeping...

In The Whistler, Lacy Stoltz investigated a corrupt judge who was taking millions in bribes from a crime syndicate. She put the criminals away, but only after being attacked and nearly killed. Three years later and approaching 40, she is tired of her work for the Florida Board on Judicial Conduct and ready for a change. Then she meets a mysterious woman who is so frightened she uses a number of aliases. Jeri Crosby's father was murdered 20 years earlier,...

Bert and Ethel go to Florida to look for their runaway pigs and find them in unexpected places.