It's bedtime and Maddie is finding out about different things we sleep on and in! At a campsite she uses a special thermal camera to show how the layers in a sleeping bag work by trapping warm air ...

John Early's directorial debut is nothing short of brilliant, with Maddie's Secret walking a delicate tightrope of comedy and drama.

Maddie does the recycling. She uses a special camera to find out how a bin lorry works to lift a bin and tip the rubbish into the hopper. An animation reveals how a moving wall inside the lorry ...