Half past peculiar

"Twins Atticus and Esmeralda Fetch are the best pet finders in Thorns Hollow -- a town where people have a lot of pets, and those pets often get lost. But when a lost dog leads them to an old, Victorian house on the edge of town, the twins find their world turned upside down. This creepy house contains a portal that leads to a whole other world -- a world where mythical creatures like trolls, fairies, and dragons are real. The secrets this mythical...