Wull's father is the Riverkeep, but on his sixteenth birthday he has to take the oars and become the Riverkeep himself.
Having researched the bohdan he knows that part of the mormorach can cure those who have been afflicted, so he puts his father in the bata - the Riverkeep's trusty boat - and sails down the Danek river towards Canna Bay, where the mormorach is rampaging.
I absolutely adored it when Wull was trying to save Till from certain death, and he said "He's a pain an' he's rude, but he's my friend".
Mix only becomes relevant two sentences before she disappears for good, so I feel as though it's their adventure was written with an open ending to allow for a sequel, to which I say PLEASE GOD, NO.
I hadn't heard of 'Riverkeep' until it was featured on the YA Book Prize shortlist, and I knew after the first couple of pages that it wasn't the kind of book I'd normally read.