The first of two specials based on Adam Kay's children's books. Child prodigy Dexter has become a paediatrician at the age of 10, and spends his days trying to solve frequently disgusting medical mysteries, find his place in the world, and deal with a jealous adult colleague determined to see him sacked. Starring Cian Eagle-Service, Peter Serafinowicz, Harry Enfield and Jameela Jamil