The Da Vinci Code reminded me of another book I read about 30 years ago, called "The Osterman Weekend". (also made into a film, which was crap) The story looked good, and like the DVC had many hooks to make the reader want to read on, but in the end it led... nowhere. I got a strong sense of dčja vu when reading the Da Vinci Code. That, plus I probably couldn't give a stuff how it ended up.
The other book that I did read cover to cover was
Kathy's Story - "A Childhood Hell Inside the Magdalen Laundries". This is an autobiographical account of a girl whose father banished her to a life inside institutions in Holy Catholic Ireland in the 1960s, where she suffered physical abuse from Roman Catholic priests and nuns. In some cases, she was raped by the very priest who preached from the pulpit against the evils of "impure thoughts". I'd already seen a TV dramatisation of a story like this. The poor girl ends up living rough, and then in Dublin's Mountjoy Prison for stealing in order to survive. As a measure of how bad those Magdalen laundries were, she said that prison life was "a breeze" compared to life in the laundries. The last of those evil laundries closed its doors in 1996! Their demise was brought about in part by the development of the domestic washing machine.