Caroline Tensen, and later Dionne Stax, reveal hidden family sorrows in gooey stories. is my father my real father? Are my brothers related? Great doubts and unanswered questions leave families in the dark for years. Fortunately, there is a DNA test, which 'conclusively' establishes whether there are family ties. That is so clear. The test puts an end to a life full of ambiguities once and for all.

• Dionne Stax