I've been listening to Robert Galbraith's books. He's only written three, The Cuckoo's Calling, The Silkworm and A Career of Evil. The plots are intricate, and the characters well fleshed out. They're British mysteries, not as quickly paced as American ones, but after the first book you get used to the slow layering of plots, ending in a terrifying climaxes. Lots of suspects which will keep you guessing until the end. Very satisfying for those who enjoy crime mysteries that aren't solved with guns.
Are you aware that Robert Galbraith is the pen name of JK Rowling? I like the books she writes under his name, but they're nowhere near as engaging as the Harry Potter series.