There is a house, notable for its lack of any interesting feature, that serves as home to four tenants. The last of these leads the reader down corridors of mystery and wonder. There's something about that place that makes him feel all is not well with his fellow housemates, none of whom he has ever seen. Pressure is put on him to find out more and his curiosity takes him down a path on which, once started, there is no turning back.

Christopher's illusion of having his life under control is shattered when the mysterious Amaryllis appears in his small town in Fife, bringing new ideas, confusion and ultimately chaos in her wake.