Sarah had a flash of genius. Downloads. A few weeks ago, her tech-savvy brother had shown her how to download episodes onto her tablet for “offline emergencies.” This was definitely an emergency.

It was a grey, drippy Tuesday afternoon. Rain hammered against the window like a thousand tiny drumsticks. Inside, four-year-old Mia was not happy.

“I’m Peppa Pig,” announced a bossy little voice. “This is my little brother, George.”