American comedian Bill Cosby will give evidence under oath later - over claims he molested a 15 year-old girl at the Playboy Mansion forty years ago.

It won't be made public until the end of the year, though.

The star - who denies any wrongdoing - is facing allegations of sexual offences from dozens of women, 27 of whom will be interviewed on US TV tonight.

Legal expert Professor Laurie Levenson says they may still get their day in court.