Besieged Bill Cosby performs benefit for women's group in Bahamas

Comedian Bill Cosby was in the Bahamas last night raising money for a local charity and polishing his image.

He cracked jokes and told tales of his upbringing in Philadelphia in a benefit for the Links, a women's service organization.

Meanwhile, a fourth woman has come forward with claims that Cosby sexually assaulted her. 

Florida nurse Therese Serignese alleged that the incident occurred 38 years ago.

A fifth woman, Carla Ferrigno, has told a radio interview that Cosby grabbed her and tried to kiss her in 1967. Ferrigno is the wife and manager of Lou Ferrigno, who starred in The Incredible Hulk.

All of the women's statements have been vigorously denied by Cosby's lawyer, who says these are "decades-old discredited allegations".

Cosby's next show is scheduled tonight in Melbourne, Florida.