Gran takes the Brockman family for a day's sightseeing in London.

When Mum finds an inappropriate image on the family computer, an investigation begins.

Karen recreates Britain's Got Talent and Ben takes an interest in Dad's medical tests.

Dad struggles against the conspiracy theories that are taking over the family.

Auntie Angela returns to show off the American therapist she has married.

Mum and Dad struggle to put things right between them, but Karen is unimpressed.