"The Boy on the Porch," a book by Sharon Creech (Harper), is about a couple named John and Maria.
One day they find a boy on their porch. They are confused. Who would leave their son on a stranger's porch? He came with a note that said, "Please take care of Jacob. He is a good boy. We will be back when we can."
They decide to keep him, and their connection to him grows. When his father comes to get him, they don't want to give him back, but they have to. Soon they become foster parents for other kids because they miss Jacob. Does he come back? Read to find out.