I don't read horror all that often because I find writers have a tendency to sacrifice storytelling for shocks. So it was very refreshing to see my expectations subverted. One thing Luke Walker does extremely well is tell a story. And I don't just mean beginning-middle-end, I mean all the small details that make the world and its inhabitants come alive, building a sense of paranoia so tangible that you find yourself peeking over your shoulder just in case you start seeing things too. He's also good at natural dialogue, which is a good thing as The Red Girl can be dialogue-intensive - not a bad thing, since the characters are what drives the story.
A cracking debut from an up-and-coming British talent. You could do much worse than give this a shot. My only gripe - small though it may be - is that I had to read it on my laptop as I don't own an e-reader, so I ended up with slightly sore eyes. I'd have loved a print edition. It was well worth the eye strain, mind you.