The Man with 1000 Kids uncovers the gripping tale of a charming Dutch man named Jonathan Meijer, who is accused of serial sperm donation at countless clinics and via numerous private donations around the world. The three-part series shares the stories of a number of families who claim they were deceived by Meijer, including Suzanne and Natalie, a couple from the Netherlands who thought that they were one of only a few couples he was helping to become parents; Joyce and John, a Dutch couple who were unable to conceive due to an irreversible vasectomy that John had during his first marriage — Meijer helped them have two children; and Laura and Kate, a Sydney, Australia, couple who learned of their donor’s actions in a Facebook group. The families in the doc are just a small representation of who Meijer may have affected.

According to the families in the series,...