I am a movie director and I just received the following movie plot. Could you help me answer this question? If not, let me know by writing "Not answerable". Plot title: The Ghoul Movie plot: Dying of a mysterious disfiguring disease, on his death bed Professor Morlant (Boris Karloff) insists that a rare jewel called The Eternal Light that he has unearthed with an ancient Egyptian religious totem be bound into his left fist by his assistant Laing (Ernst Thesiger) and buried with him in his tomb so that he may meet the god Anubis and receive eternal life. When the professors nephew Ralph Morlant (Anthony Bushell) discovers that his brother has been buried in such a strange fashion and without a meeting with lawyers to discuss the estate, he goes to the strange home where the tomb lays to see for himself what his brother possesses that he is due to inherit. Meanwhile a ruthless Egyptian Aga Ben Dragore (Harold Huth) is after the precious jewel and arrives at Morlants home searching for it. Laing wants the priceless jewel for his own and steals the jewel form the dead professors hand thus provoking the dead professor to rise from his grave and seek revenge. My question: What is the name of Rare Jewel?
The answer to this question is:
The Eternal Light