This mystery / thriller / suspense book cover features a toddler on the other side of a glass window covered in water drops. The features of the toddler is indistinguishable. The toddler could pass for a girl or a boy and has his/her hands on the window.
Each of these middle-grade fantasy book covers features an illustration of cartoon fairies sitting on a mushroom. The starry night sky, trees and grass are in the background. Additional series covers are possible.