I have to confess I love Dan Brown’s books and I’m looking forward to “The Solomon Key” when it eventually appears. In the meantime, I’ve been looking for similar thrillers and the best I’ve come across so far is mike hockney’s “The Armageddon Conspiracy”, which is totaly bonkers but highly entertaining. Can anyone else recommend good religious/conspiracy theory thrillers (fast-paced with twist endings, preferably). Thanks in advance.

I’ve greately enjoyed Steve Berry’s books: 

The Amber Room, Ballantine Books, 2003. ISBN 0-345-46004-9
The Romanov Prophecy, Ballantine Books, 2004. ISBN 0-345-46006-5
The Third Secret, Ballantine Books, 2005. ISBN 0-345-47613-1
The Templar Legacy, Ballantine Books, 2006. ISBN 0-345-47615-8
The Alexandria Link, Ballantine Books, 2007. ISBN 0-345-48575-0
The Venetian Betrayal, Ballantine Books, 2007. ISBN 0-345-48577-7

I haven’t read The Venetian Betrayal yet; waiting for it to come out in paperback.