Saving rhinos is fraught with contradictions. To save them from extinction, will we have to be cruel to be kind? Something KP also knows about in his closest friendships. In this final episode KP opens up about his relationships - and the dark solution that may yet save the rhino from extinction....

The war to save the rhino has brought a father and daughter to the very edges of love and hate. Kevin meets the father figure of the rangers in this part of South Africa - Don English - a man who has had to kill to save the lives of the rhinos. But the effect on his daughter has been immense....