When the laboratory technicians working for Ancestor Lu discover the key to the immortality genetic structure, Victor names it the Cathy Key in honour of his quest to make Cathy immortal. Ancestor Lu humours him. But when events go fatally wrong and a Fortune Teller's grim prophecy comes true, soon a homicide investigation is underway and Cathy, once again, is a little too close for comfort Cathy's Key is a brilliantly involved thriller, a love story and an entirely interactive experience with further developments to the websites and phone numbers and online activity which make this package so unique and special.