Chrissa has just mentioned the two I was thinking of, Harlen Coben already mentioned too. I enjoy Reginald Hill - Dezeal? and Pascoe books they are entertaining, atm I'm reading The Godfather b Mario Puzo.
I absolutely love the Agatha Raisin books and have recommended them to a few friends/family who are also now hooked on them. I am also a big fan of Dick Francis despite not being a racing fan, his older ones are the best in my opinion and can often be picked up in charity shops