From the backcover:

"A group of students share a house in the eighties, fall in and out of love, and drift apart. A decade later they are drawn back together by a series of coincidences involving their obsession with sleep.
Sarah is narcoleptic who has dreams so vivid she mistakes them for real events; Robert has his life changed for ever by the misunderstandings that arise from her condition; Terry, the insomniac, spends his wakeful nights fuelling his obsession with movies; and the increasingly unstable Dr Gregory Dudden sees sleep as a life-shortening disease which he must eradicate... "

Original and full of surprises (I love when I don't see them coming!)