Otto Tattercoats and the Forest of Lost Things by Matilda Woods

An enchanting, wintry middle grade adventure for fans of Kiran Millwood Hargrave and Abi Elphinstone. Otto lives in the frozen city of Hodeldorf, where an eternal winter has fallen. When his mother goes missing one morning, he must join forces with the Tattercoats, a gang of brave orphans, to find her. They will journey into a dark forest where witches lurk and sun dragons lie sleeping, on a heart-racing adventure that will chill you to the bone.