The Last Child — Georgina Makalani

Many years ago a town full of children disappeared in the middle of the night, only one was found. Now two of them have wandered back into the town square and Iski Flare has been asked to help find the others. But twenty years is a long time and he's not sure if the last child won't or can't help.

Mirabel reminds him of Flare in more ways than he would care to admit, but he can't lose this child now. She might be leading him toward more than he thought possible. Far more than he expected to find.