I haven't had time to finish this book, but here goes nevertheless.
John Creasey has been one of the most prolific writers in the world, but there are only few of his books translated in Finnish - his series on the Superintendent Gideon made its way in Finnish only twice. I believe it has something to do with the fact that the books came out of nowhere and the publisher didn't allow the readers enough time to get acquainted with the series and all the characters. It's interesting to note however that many aspects of the police procedural genre we usually associate with TV series like Hill Street Blues and The Wire and writers like Joseph Wambaugh were already fully used by a Briton like Creasey. There is the sympathetic and determined main character Gideon, there are lots of his colleagues and employees (what's the right word here?), there are intertwined plotlines, there are many subplots, there is the sociological perspective to all this. There's also the British class society very visibly in sight, many of Creasey's - or Gideon's - sociological notions lean on patronizing.
I would tend to say this is a bit outdated, but interesting nevertheless. Gideon ottaa riskin (Gideon's Risk, 1960) came out in Finnish in 1965. More Forgotten Books at Todd Mason's blog here.