"For me it was loss of hearing," she said. Everyone knew to get inside, more by experience than by the warnings. Because who would have thought that not only did the doors lock one out, they also locked everyone else in.

"It'll come back. Your vision. Within the next few days at least. Until then, your best off attaching yourself to a friend or holing up somewhere and hoping the hallucinations don't come."

She took a sip of the water herself before capping the canteen.

"I'm Martha Jones." Maybe that would help calm him down a little.