Series in which Vivienne Parry is joined by a panel of experts to tackle the ethics involved in a real hospital case. Sarah has Hepatitis B, which she caught from her mother at birth. Her mother is adamant that she doesn't want her daughter to know what is wrong. She has seen families shunned for having Hepatitis B and she doubts Sarah's ability to keep the secret. But the disease is highly infectious, through blood and sexual contact. Does Sarah have a right to know about her condition?