Strolling on the seashore with her husband, Philomela Nightingale makes a grisly discovery. It drags the two of them beneath the island's pristine paradise into a sleazy world of drug addiction and prostitution and turns their relaxing vacation into a nightmare beyond belief. Adding to her dismay, Philomela becomes a suspect. A sense of justice gradually rises to the fore, propelling her to use her intuition and powers of observation to help solve the puzzle of not one, but two disturbing murders.