Terror at London Bridge

London Bridge, London, England, 1888. Jack the Ripper dies in the Thames river. London Bridge, Lake Havasu, Arizona, 1985. The last original stone used to rebuild the London Bridge is laid, all the city is happy. But since that moment some strange murders happen. The policeman Don Gregory has some suspects, but his ideas are quite strange, he thinks about a Jack the Ripper revived. Nobody believes him...