This is the second in the series by Robert Galbraith (aka J K Rowling). The first is The Cuckoo's Calling and I recommend you read it before starting The Silkworm. That way, you will understand the characters better than if you plunge straight into book two.
I loved everything about this story. It has complex characters, twisting plot lines and
masses of descriptive detail. I'm eagerly waiting for the next one...
Interested in finding out about this series? Goodreads is the place to start!