Philip is trying to invent a better soda can to impress a businessman who's coming to dinner. For her homework, Emma wants to know if the family have any illustrious ancestors and Philip mentions a famous inventor; she wishes she could meet him but Adil goes a bit too far and the ancestor turns out to be a caveman. When their American dinner guest arrives, Sophie and Emma have to persuade him the caveman is Philip.
With:
- Jay Benedict as Soderburgh