DS isn't a big reader, but will sometimes flick through self help type books or the odd book on rugby/football/basketball/fitness.
However, he does like to watch TV shows that are police/detective stories - from Dexter to The Rookie. And he has expressed some interest in being a police officer then private detective when he grows up.
Are there any modern detective stories that would be appropriate? I don't think traditional kids books are going to work - it definitely needs to be in the YA category or adult, without being TOO complex. I'm tempted to introduce him to Cormoran Strike but I think those stories are too long and too complex at this point - but that sort of thing. I think he would prefer something that feels more "real" rather than the sort of Nancy Drew/Hardy Boys stuff of my childhood!