There's a Monster in Marvin' is a children's picture book about a boy who had a traumatic experience: "Something bad happened to Marvin." But, since he never told anyone about his experience - "He didn't tell his mother, and the monster grew. He didn't tell his father, and the monster grew. He didn't even tell his teacher, but I knew...." - there was no remedy for his problem, and he began to act out in dangerous ways. He yelled at his parents, hit his little brother, broke all his toys, and was insolent with his teacher. He even tried to commit suicide in various ways. In order for Marvin to be able to heal from his emotional problem, he had to learn to like himself, since children who have had a traumatic experience tend to blame themselves for what happened to them (separation from one or both parents, physical and emotional neglect, or sexual molestation) and this book is intended to be a 'door opener' for children who are suffering the monsters inside of them.