I have to say that I absolutely love these books. They are written in that straightforward easy to read way, yet still intriguing leaving you wanting more style that J.K. so fantastically masters. I really enjoyed the first 'The Cuckoos Calling'. The second I still enjoyed but it is my least favourite of the three. But the latest one out 'Career of Evil' was just BRILLIANT. If you haven't read them I highly recommend doing so. You don't have to read all three, but it does help with knowing the characters, especially when you read the third.

Give them a go. Be aware that they are adult themed and contain mature language. If you're a fan on J.K. or just good books, you'll enjoy them.