Martine Agassi, Ph.D., is a clinical therapist with extensive experience as a behavioral consultant, counseling children and families in schools, residential facilities, foster care, and private practice.

She has led workshops and group counseling in communication skills, parenting, drug and child abuse prevention, divorce, and self-esteem. Martine, her husband, and their daughter live in Fallbrook, California, with their dog Toby.

Marieka Heinlen launched her career as a children's book illustrator with the award-winning Hands Are Not for Hitting.

As a freelance illustrator and designer, Marieka focuses her work on books and other materials for children, teens, parents, and teachers. She lives in St. Paul, Minnesota, with her husband and son.