Their stories are jaw-dropping. A woman who regrets saving the life of her daughter’s rapist. A woman who decided to donate her perfectly healthy kidney to a perfect stranger. A man who walked past someone dying on a mountain – and says he’s thought about that decision every day since. They all join Insight this week to discuss whether there is any moral obligation to save a life. What if it means putting your own life at risk, or saving someone you despise or hardly know? We also look at cases where someone in dire need has been ignored – sometimes with fatal consequences. Psychologists refer to this as "the bystander effect" which says that if there are multiple people at the scene of a crisis, everyone assumes someone else will be the one to step in to help. One guest on the program wants a "duty to rescue" law, effectively forcing Australians to help others if they are in danger.