Together walking in the rain, Jane and I sing cheerfully as usual. I turn my Ipod on and skip between the trees.

Suddenly, I find myself surrounded by some giant trees. I stop and scan around. A drop of rain drips onto my head.

There she is! A purple spot shines in the darkness.

'Jane! Where were you? I was so scared! Come here, I have an umbrella. Come on.’

She doesn’t seem to have moved an inch.

Now another man appears next to her. He is holding a soaked tenner while my sister drops the bag of white powder onto the wet, muddy ground.

I start running towards her but wait - I cannot move.

A hand as heavy as steel has already reached my shoulder.

She stares at me in the most horrified way I have ever seen.