I'm not exactly sure what notes Ron Howard received from the studio following his adaptation of The Da Vinci Code, but I imagine it went something like, "More dead, bloody people hanging in churches!" Indeed, this time around -- for his adaptation of the Da Vinci prequel, Angels & Demons-- there appears to be a lot more ... creepiness. The first couple of teasers and TV spots did nothing to excite the summer movie watcher in me, but I have to say they did a bang-up job with this full-length trailer (watch it below, or in HD over at MSN).

Tom Hanks reprises his role as Dr. Robert Langdon, and he's once again summoned to Rome where he'll need to solve a few puzzles, run around with a beautiful woman and talk a lot about The Illuminati -- all while risking his life, but not dying (because we already know he shows up in the sequel). Perhaps that's not the best description, but I didn't read this particular book -- so head after the jump to get a full, official synopsis. Angels & Demons hits theaters on May 15.

span style="font-style: italic;">The team behind the global phenomenon The Da Vinci Code returns for the highly anticipated Angels & Demons, based upon the bestselling novel by Dan Brown. Tom Hanks reprises his role as Harvard religious expert Robert Langdon, who once again finds that forces with ancient roots are willing to stop at nothing, even murder, to advance their goals. Ron Howard again directs the film, which is produced by Brian Grazer, Ron Howard, and John Calley. The screenplay is by David Koepp and Akiva Goldsman.

When Langdon discovers evidence of the resurgence of an ancient secret brotherhood known as the Illuminati - the most powerful underground organization in history - he also faces a deadly threat to the existence of the secret organization's most despised enemy: the Catholic Church. When Langdon learns that the clock is ticking on an unstoppable Illuminati time bomb, he jets to Rome, where he joins forces with Vittoria Vetra, a beautiful and enigmatic Italian scientist. Embarking on a nonstop, action-packed hunt through sealed crypts, dangerous catacombs, deserted cathedrals, and even to the heart of the most secretive vault on earth, Langdon and Vetra will follow a 400-year-old trail of ancient symbols that mark the Vatican's only hope for survival.