The beautiful bronzed body of Arlena Stuart lay facedown on the beach. But strangely, there was no sun and Arlena was not sunbathing... she had been strangled. Ever since Arlena's arrival the air had been thick with sexual tension. Each of the guests had a motive to kill her, including Arlena's new husband. But Hercule Poirot suspects that this apparent "crime of passion" conceals something much more evil.