Three sisters, one birthday, one little problem...

The three Kettle sisters have had a mortifying mishap. Their raucous, champagne-soaked birthday dinner has come to an abrupt end following a violent argument and an emergency dash to the hospital.

So who started it this time? Was it angry, hurt Cat, still recovering from the 'night of the spaghetti'? Was it Lyn, so serenely successful, at least on the outside? Or was it quirky, dreamy Gemma, the sister who can't keep a secret except for the most important one of all?