DS has been told a million times by every teacher he's ever had that he needs to read fiction as well as information books (which he devours, across a wide range of subjects). The only 'story' book he claims to have liked is Cool Nukes - which I haven't read but I think the reason he liked it was that it was about someone discovering something sciency - nuclear fission perhaps. He's in year 5. He also had a couple of books from the library that were fiction, but full of facts, and he quite liked them. Neither of us can remember the titles.
He has to read a series next term for school, but he can choose which. He has turned down Alex Rider, which I thought he might like.
Any idea of a suitable fiction series which he might like?