Fern Mortimer has mastered the art of being invisible. Since a hit and run accident five years ago left her wheelchair-bound, she has become a recluse in her parents’ home. After finally venturing back into the real world, she struggles to make friends and trust anyone. Getting the nickname of The Ice Queen at her new place of work does little to build her confidence. However, one young woman, Nessa Sullivan, sees through Fern’s mask and is determined to be her friend. A mission that only months later sees Fern joining Nessa and three others on a well-deserved and much-needed holiday to the Portuguese Algarve. During the holiday, Fern is seduced by a handsome restaurant manager, raising her mood and her hopes of a romantic entanglement whilst also robbing her of her usual common sense and sound judgement. So, why is her wheelchair now lying capsized in the infinity pool and a body is spotted out at sea? Where is Fern Mortimer?