Michael Crichton also has a new book out called, "State of Fear." I like his stuff a lot and that book is on my wish list.
Worse comes to worse, go to Barnes & Noble and get a gift card.
Koontz's most recent (last five years or so) has also had a fairly solid conservative and Godly tone. Check out his last (the Taking) as a prime example. I just finished his newest (Life Expectancy) and it was awesome.
Yes, Virginia, there's even a Part 2!