ANGELS AND DEMONS, nice movie!!!! love to watch it in big screen but pets aren't allowed in theatres are we???

When a murder of a physicist, Leonardo Vetra, finds a symbolist, Robert Langdon, and Mr. Vetra's daughter, Vittoria, on an adventure for a secret brotherhood, The Illuminati. Clues lead them all around the Vatican, including the four alters of science, Earth, Air, Fire and Water. An Assassin, working for the Illuminati, has captured four cardinals, and murders each, painfully. Robert and Vittoria also are searching for a new very destructive weapon that could kill millions.

The Pope died and the conclave has been called for. 4 candidates were chosen. However, before the voting, the 4 candidates are killed one by one. The killer leaves clues that seem to say that he/she is from the Illuminati. Strangely though, the Illuminati was long thought to be extinct. Who is the mastermind? Who revived the Illuminati? What do they want?