When his son Rowan was diagnosed with autism, Rupert Isaacson feared he might never communicate with his child. But when he discovered Rowan responded to horses, they traveled to Mongolia - the spiritual home of the horse - where shaman healing hands banished the tantrums, the incontinence, and the hopeless isolation. A year later, however, Rowan started regressing. Only then did Rupert remember the shaman had told him that he and Rowan must make...