14 ‘Why would you lock a fire door?’ Dominic asked, peering over Vicky’s shoulder as she prised the padlock with her crowbar. ‘They were supposed to be left open during trading hours, and places like this hardly ever closed.’ ‘It might not be a fire door,’ Gary said. ‘Looks like one to me.’ ‘Whatever kind of door it is, we need to be careful,’ Ruth said. ‘Stay back. Depending on what the entrance arrangements were here, the whole building could be crawling with them.’ ‘That might explain why there are so few outside,’ Lisa suggested. Gary was more upbeat. ‘I reckon we’ll be okay. Think about it... none of them moved for the first couple of days. The power would probably have been down by the time they were mobile enough to trigger the sensors on the automatic doors.’ ‘Would they hav

