I had to write a review on this book after reading the last review posted with 1 star.
I own and have read all of Mark Billinghams book and am a massive fan of the Thorne detective series,(if you haven't discovered these yet you will need to start with "Sleepyhead"(which is one of the best crime thrillers ever written).
Anyway, with reference to "Rush of Blood" (which is not a "Thorne" novel), Mark has put together a completely new set of caricatures, and placed them in a scenario any couple on holiday could find themselves in.....this for me is what draws you in.
One thing I would like to get across is the way MB writes. He keeps the pace high as he doesn't over describe....everything. He lets you use your imagination to fill in the blanks. So where a S King would painstakingly describe a caricature and a room over half a chapter, MB would give your 4 or 5 features and let you fill in the blanks. This enables him to paint a more detailed picture of the plot and, for me, the caricatures become more real. I hope my review helps.