Currently reading Joe Gores "Spade and Archer' a prequel for the Maltese Falcon, top read, Gores is a former PI and current crime writer, plus it has the approval of the Hammett family, so feels very much part of the world occupied by the orginal. After that, it's gonna have to be the Falcon itself, then 'Matterhorn' by Karl Marlantes - love a good bit of lit fict me.