13. March 2018 Equine Assisted Therapy. How Do Horses heal Humans? The Spell of the Horse author Pam Billinge Explains... For more on Pam, her horses and her work, go to her website, Equest. The Spell of the Horse: Stories of Healing and Personal Transformation with Nature's Finest Teachers by Pam Billinge, out now in ebook and paperback. tagPlaceholderTags: horses, self help horses, equine assisted therapy, horse whisperer