There is a bit of minor concern to note here. One scene of the book includes a Halloween party. Several of the traditional decorations and costumes are mentioned (werewolf, witches, skeleton, 'a devil'. There are a couple of more 'serious' moments in the book. Each are quickly resolved in a great way (by Humphrey's help), but when first presented they are quite a bit deeper than the rest of the material. In one a young man starts light bullying behavior (trips someone, shoots rubber bands, makes a mean comment to Humphrey and tries to free him maliciously, lies when confronted). This is out of character and we quickly find out something is really bothering the child to lead to the behavior. Later it is revealed that another character who is very unkind had been through a traumatic incident that they have not gotten over.
