Watch Series: Millie Inbetween Released in (2014) - Season 4 produced by UK, and content rating 30min with duration 30 min broadcasted as these networks CBBC, Streamed at Putlocker & directed by Angie de Chastelai Smith, Dez McCarthy, Fraser Macdonald. Millie Inbetween is a children's comedy series broadcast on CBBC. Millie’s parents have just broken up and she and her sister Lauren are spending time at both their Mum’s house and Dad’s flat. Millie soon sees the advantage to this family set-up as she has two chances to celebrate Christmas, two birthdays and two bedrooms. Problems arise though after her parents find new partners. - Season 4