Dov Fox finally sits down with the man at the center of it all.

Speaking to a cast of people who knew Donor 9623 during a fraught time, Dov Fox pieces together a timeline of the donor’s complicated past and multiple lives.

The investigation reaches a fever pitch as host Dov Fox unearths tapes of far-reaching conversations between Donor 9623 and the sperm bank’s greatest saleswoman.

When the families take legal action, courts must wrestle with fundamental questions about the genetics of disease, the value of human life, and what it means to love your child.

Assisted reproduction is big business in the United States.

Disturbing new details emerge from the moms’ quest for the truth. How could this deception go undetected for so long? And what did the sperm bank know? Its former CEO weighs in.

Moms around the world join forces to uncover the real identity of the anonymous man they all chose to have a child with, learning that scores of others out there used the same donor.

A family struggles with a troubled son, who makes a startling discovery about his biological father, opening up a world of deceit.