Both are good/able readers.
DS (9yrs)loved:
Diamond brother series by Anthony Horowitz (but didn't much like Alex Ryder series)
Percy Jackson series
Wimpy kid and Tom Gates (although they are too easy now - he still re-reads them though)
Dd (11yrs) loved:
Wonder by RJ Palacio (think this has been read multiple times!)
Harry Potter (all)
Lady Grace mysteries
Percy Jackson Series
Cath Cassidy
Lemony Snicket (all)
I want some challenging but fun books for them both. Any suggestions?
Thanks 