Harvard symbologist Robert Langdon works with a nuclear physicist to solve a murder and prevent a terrorist act against the Vatican during one of the significant events within the church. (IMDb)
I thought this film was going to be terrible after it began with yet another enormous pile of pretentious exposition (this time about anti-matter and the Illuminati of all things) but it actually turns into a pretty decent crime thriller after the eye-rolling set-up finishes. Gruesome violence, a quick pace, and interesting underlying political intrigue in the Vatican make the stakes feel high and keep you interested in spite of relatively unengaging characters. Not sure about that twist though.