It’s the summer of 2008 and a bride and groom have just stepped out of a carriage drawn by two white horses. The sun is out, the bridesmaids are wearing beautiful dresses, everyone has drinks in hands. The day's gone smoothly for the wedding party and for Emily King who is sitting at the front of the carriage in control of the horses; it's her business and it’s thriving. But then events take a terrifying turn. The psychological impact of that summer day has been deeply scarring but has also given Emily what her son calls ‘superpowers’. Details of support with mental health issues are available at bbc.co.uk/actionline.