James, Joe and Andy’s help was required once more when Professor Yates’ mummy, Ram-Ramu, suddenly started whispering to him. They were all suspicious because the mummy only whispered in an ancient Arabic language and it only whispered to Professor Yates. They consulted Professor Lowery, a friend and neighbour of Professor Yates’, who was an expert in ancient and modern Arabic languages, to translate the message being whispered by the mummy. Later on, trouble came when a boy named Jordan claimed that Ram-Ramu was his ancestor and along with his father’s manager, Ahmed, he wanted to bring Ram-Ramu’s mummy back to his country to let Ram-Ramu live in peace. Did the Three Investigators succeed in revealing the mystery behind Ram-Ramu’s being amiss from Professor Yates’ residence? Had they discovered who was behind the stealing of the mummy?