Missing Piece in Greece — Linda Lowery Keep

Hannah's next mission lands her in the ancient city of Athens, where Icarus crashed when his wax wings melted. Hannah hopes that doesn't happen to her angels, because she really needs them! Her new friend Alexis is a gymnast who's trying out for the Olympics--but someone is trying to scare them both. It's Hannah's job to keep Alexis safe--and balanced--before the games turn dangerous. . . .