1Buck's Big Club It's a very special kind of club - run by a man called Buck Stowers, he's taking the fight against fat in his community very, very personally. The club calls South Auckland home - and it's working - even for the biggest of the big. We're talking people losing 70, 80 even 90 kilos - without resorting to surgery. Sonya Wilson talks to Buck - the man who's trying to save the world from eating itself to death.

2Mother's Day Murder Who killed a popular school nurse and beloved mother of five from a picture postcard, New England town on Mother's Day? Could her ex-husband and the father of her children have had a motive after going through a bitter divorce or did her ex-boyfriend see red after a recent break up? 20/20 interviews both men and asks whodunit?

3"Unhappy Hooker": Davis Investments - it wanted Wall Street's money but for a different kind of service. The company was in fact a front for one of New York's biggest brothels. Men of power and influence frequented the best little whore house on Wall St but when it was busted, they vanished into the night while its madam was left to carry the can. Kristen Davis opens her little black book for 20/20 and shares its dirty secrets.

4Hidden cameras capture the public's reaction when a job applicant is told she is too fat for a job.