Thriller Recommendations for Newbies

Hi Bookies!
I LOVE thrillers - so while we're in the spooky month of Halloween, I thought I'd recommend 5 thrillers all for very different reasons. From a book in the genre that is probably the most well-known and therefore a great place to start (it was my very first thriller read!!) to a book recommended for those of you who are more comfortable with the sci-fi / fantasy genre... there's a book for everyone here: