I borrowed this from a library after a friend recommended the author to me after learning that I had read some Terry Pratchett some years ago. This was the first Tom Holt book I found so thought I would give it a go.
The story revolves around Frank Carpenter, who owns a door that can take him wherever and whenever he wants and Eliza Spitzer, who works in pest control (pests being dragons, trolls, giant spiders etc.). The story is a little less fantastical than a Terry Pratchett novel, the magic and dragons etc being almost incidental to the story, rather than the main reason for the story. It is almost like Terry Pratchett for grown ups who want an easy read. It is a story that keeps you hooked without having to think too much. The characters, even the more dubious ones, are likeable and make you want to find out what happens.
I would definitely read another of the Tom Holts books and can recommend this particular one.