The K Apartments for Ladies in Tokyo conceals a sinister past behind each door. The master key, which opens the door to all 150 rooms, links their tangled stories. But now it has been stolen, and dirty tricks are afoot. For a deadly secret lies buried beneath the building. And when it is revealed, there will be murder. A building full of secrets. A key that will unleash them all. Fiendish intrigue, double identity and an ingenious plot make this a thriller worthy of comparison with the work of P.D. James.