Peter Dickinson, who died yesterday on his 88tj birthday, has been a doyen of the crime writing world for decades. He was, for instance, elected to membership of the Detection Club as long ago as 1969. His literary achievements span a wide range, but I'm familiar with his crime stories, which achieved great distinction.
His first two crime novels, Skin Deep and A Pride of Heroes, both won the CWA Gold Dagger - a remarkable feat. These highly original stories introduced a cop called Jimmy Pibble, who became a series character, appearing in half a dozen novels. His stand-alone crime novels demonstrated the same inventiveness. I haven't read them all, but of those I do know, The Yellow Room Conspiracy (1992) is probably my favourite.
I heard Peter Dickinson speak about the genre once at a Bouchercon, and he was as erudite as you'd expect from an Eton and Cambridge man, but he was also extremely perceptive and interesting. The genre has lost a major talent.