This picture book for children, ages 3-8, tells the story of a young girl's love for Boo-her grandmother's therapy kitten. Boo lives with Bella's grandmother in a nursing home. When Bella comes to visit, Boo jumps in her lap. As she gently caresses the kitten, Bella whispers in her ear, "I love you, Boo. Pass it on." Bella's whisper triggers a chain reaction of love that races throughout the nursing home.