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Rescued after hours in the freezing water clinging onto the wreckage of her yacht; Clara Conner wakes up in Dover hospital with hazy memories of the accident that put her there. Patrick, her husband, is missing, presumably killed by the explosion that tore the Connemara apart. Haunted by shocking and violent images, Clara becomes convinced that Patrick was murdered and that she was attacked; but are these really memories or are they just trauma induced fantasies? As Clara begins to sort through Patrick's business affairs, she soon realises that her husband had led a double life. He was involved with criminals and owed someone a lot of money. So when a mysterious man appears to be watching the house and following Clara's every move, her fears for her own safety, and that of her twelve year son, grow. Could this man be the attacker who killed Patrick and tried to murder her and does he want to finish the job?