Synopsis Afraid to start fifth grade at her new school, 10-year-old Cassidy sneaks down to the park to look for Jo-Jo, her homeless friend living under the bridge with her sister, the girl she met this past summer. However, when Cassidy arrives, she finds their camp is abandoned and her search for answers leads only to purple-stained clues. Cassidy finds the weekend's concert ticket with purple smudges, a...