The Search for T5

Narelle Grech was a teenager when she first discovered that she'd been conceived using donor sperm. As her shock turned to deep curiosity, Narelle decided - she had to meet this man. All she has to go on is his donor code, T5. It leads her on a search that spans two decades, take her across continents and results in a landmark law that allows donor-conceived people to learn the identity of their donor - and vice versa. Thanks to the ABC's Damien Carrick and Sarah Dingle for the use of archival interviews in this episode.