The inside of the bus was very dark.

Mac could barely make out the seats in front of him.

‘Sit down, Grandpa,’ said a rough voice and Mac was pushed onto the closest seat. ‘Not another peep out of you.’

In the seat beside him someone sat sobbing quietly.

‘I’ve been here for three days now,’ she whispered. ‘Some of us have been here even longer.’

‘Quiet!’ said the voice. ‘I thought I said no talking.’

But Mac just didn’t understand.

‘Who are you?’ he shouted. ‘What do you want with us?’

‘What do we want?’ mocked the voice. ‘What do we want?’

Mac heard a laugh.

‘I’ll tell you what we want.’