On this special live episode of Family Secrets, recorded in Philadelphia in January, author and podcast host Gretchen Rubin interviews Dani about uncovering the family secret that became the subject of her bestselling memoir Inheritance: that her beloved father was not related to her by blood. Gretchen and Dani discuss the aftermath of that discovery — including what it was like to forge a connection with her biological dad — plus the ethics of anonymous sperm donation, and what the rise of DNA testing means for those guarantees of anonymity.