Relics and reptiles

I was surprised to discover that not only was the movie The Relic based on a novel, but that said novel also had a sequel! In fact, you can read a sample chapter from said sequel, Reliquary, here.

Speaking of samples, you can also read samples from The Relic, an early draft of The Relic, and other novels by Douglas Preston and Lincoln Child at their official website. I highly recommend checking it out, as the behind-the-scenes notes provided more insight on the creation of the reptile monster than the film did. Similarly, the Wikipedia entry for The Relic notes the various differences between the novel and film version of The Relic (but also has many spoilers).