Being shunned by a lover, a school or an employer hurts - but we're only just beginning to understand how real this pain is and what steps we can take to administer a bit of emotional first aid to stop the experience scarring us for good.

Dr Laurie Santos talks to leading experts in the science of rejection... and to actor/marine/golfer Tim Colceri about one of the most extreme real life stories of humiliation and dashed hopes you're ever likely to hear.