From here to paternity.

How do fathers ever really know the truth of their own paternity? Up to 10% of children might find out that the man they thought was their father wasn't, and 30% of people seeking a DNA test find out they are not the parent of what they thought was their own child. This programme aims to present a small number of case studies from all aspects of this problem, some of these studies are narrated by those involved in them, but a number are reconstructed using actors which is occasionally implausible and annoying.