Georgina was conceived 34 years ago when her mum had a holiday romance with a Portuguese waiter. Sheโs now wondering if her father is still alive. Matthew grew up never knowing his fatherโs identity and wants to know if his ancestry is actually Caribbean. Michaela and Richie only realised they could pass down the genetic disorder 'bubble boy disease' when they had their son Arlo. Now theyโre testing their second childโs DNA to discover if he has to undergo life-saving gene therapy.