"Through join-up, clients often report a sense of “coming alive” that may have eluded them even after many sessions of conventional talking therapy. Forsyth described a sense of oneness with an ivory gelding called Ko Li that bordered on telepathy. But when I first approached Isis, she ignored my silent pleas. I found myself miming a slow-motion disco dance to try to catch her eye until, after about 15 minutes, she fell into step behind me – a moment of exhilaration that left me feeling all lit up."