ET's own Mark Steines was the only reporter with exclusive access to the top-secret 'Angels & Demons' set at the Vatican City in Italy with Oscar winners Tom Hanks, director Ron Howard and producer Brian Grazer!

Mark talks about his first impressions of his Italian adventure -- and the Tom Cruise/Katie Holmes connection!

Hanks, Howard and Grazer are all back for the exciting prequel to 'The Da Vinci Code,' in which Hanks' Robert Langdon must confront a shadowy secret society, the Illuminati, to uncover a conspiracy that may put the Vatican -- and the world -- in explosive jeopardy.

Watch ET Monday for Mark's exclusive, invitation-only 'Angels & Demons' set visit!