When a woman falls in front of a London Underground train the police assume it was an accident or suicide until they find the knife sticking out of her back. When a similar murder happens a few days later Brewster takes on the case knowing that the killer could strike again at any time.
I have a fascination with the London Underground so any book set there immediately draws my attention. This book follows a selection of characters who are mostly interlinked in some way. It's fairly obvious almost from the outset who the killer is but I think this is intentional. The killer is properly revealed somewhere between half and two thirds of the way through the book although there are still plenty of mysteries to try and work out.
I liked the story and it's London Underground setting. It also tied the July 7th 2005 bombings into he storyline as well which was interesting. I get the feeling that the bombings happened as the author was writing the book and she decided to include it as opposed to it originally being part of the plot though.
The characters were for the most part likeable, however, a lot of them were very stereotypical and clichéd and didn't seem to have much depth to them. This was only a minor annoyance though and didn't stop me from enjoying the story.