I found the hide-and-seek aspect a bit difficult in The Lost Cousins by B.B Cronin, therefore, this is more for the older child (5 to 8 or even older). However, it is suggested for slightly younger aged group. It will depend on the actual child and if there is adult help as well. Just announced as part of the NYT’s Best Illustrated Books of the Year 2019, it is described: “All great picture books make you see the world in a new way, but B.B. […]