Chilling thriller set on Gibraltar: Sebastian is a civil engineering prodigy working on his most ambitious project to date - to build a new city on the sheerest face of The Rock. His diver fiance, Eva, is entranced by the penisula's hidden depths. Teenager Mimi is chafing at the limits placed by her over-protective older brother. Three people's lives intricately linked to the Rock and its dangers -- Honno