The Monster Catchers (Bk. 1) by George Brewington - Hardback

Whether it's a goblin in the garden or a fairy in the attic, Bailey Buckleby and his dad can rid your home of whatever monster is troubling you - for the right price. But when Bailey discovers that his dad has been lying - their pet troll Henry is actually a kidnapped baby sea giant - he begins to question the family business. Enter Axel Pazuzu, criminal mastermind, who will stop at nothing to make a buck. With everyone and everything he loves in peril, it's up to Bailey to save his family and set things right in this funny, fantastical adventure.