A retired police detective and a former neo-Nazi leader may seem like an unlikely partnership. But Dr Bernd Wagner and Ingo Hasselbach have taken their past differences and used them as the basis for making a real change. When Hasselbach quit neo-Nazism over two decades ago he and Wagner, who had once arrested him, realised they had a shared dream: to help far right extremists change their ways. Presenter: Tallulah Berry Reporter: Harriet Noble Image: Ingo Hasselbach / Credit: BBC