On this episode of Extreme Cake Makers, Nastassja Lussengo takes on a challenging task as she creates a four-tiered spiral cake inspired by DNA. In Lancaster, Molly creates a spectacular cake to celebrate the NHS's 70th birthday, complete with 25 kilograms of fondant and 29 handmade fondant figures. Meanwhile, in Essex, cake maker Eloise attempts her first animal cake when she is commissioned to make a giant dart frog cake.