Doctor Craig Bo has everything: a perfect wife and children, a thriving dermatology practice, and a house in a lovely coastal town. Nobody is surprised when he is chosen to be the Sea King of Beachside in his hometown's annual festival.But after the festival Craig's world turns upside down. Something starts growing on his skin. His son tells him a story about a sinister mermaid who lives in the attic of the local history museum. And his beautiful wife, Penelope, can no longer hide her dark connection to the sea.As Craig grapples with his own secrets and misdeeds, he finally understands the woman he married and the plans she has for him.