It's business as usual for Mr Glossop as he does his regular round delivering wages to government buildings scattered across New Zealand's lonely Canterbury plains. But when his car breaks down he is stranded for the night at the isolated Mount Seager Hospital, with the telephone lines down and a storm on its way. Trapped with him are a group of quarantined soldiers with a serious case of cabin fever, three young employees embroiled in a tense love triangle, a dying elderly man... and a potential killer. When the payroll disappears from a locked safe and the hospital's death toll starts to rise faster than normal, can the appearance of an English detective working in counterespionage be just a lucky coincidence - or is something more sinister afoot?