The three-part documentary series The seed of Karbaat tells the incredible story of the late doctor Jan Karbaat, who inseminated his patients with his own sperm in more than 65 cases. The news that Jan Karbaat was using his own seed to inseminate his patients shocked the world. The seed of Karbaat tells how that could happen. In addition, it also shows how Karbaat worked and how he assaulted and sexually intimidated patients. Though this is just the tip of the iceberg; mothers, descendants and those involved have to learn to live with the emotional trauma of a changed genetic lineage. Through Karbaat's story, the series explores the nature vs. nurture debate, the desire for immortality and the moral issues surrounding anonymous donorship.