And Then There Were None

I'd seen a TV adaption of this novel and it slightly influenced, but did not spoil, my reading of it.
Ten strangers are brought together in a house on an uninhabited island where a disembodied voice accuses them of having each commited murder. Then, one by one, they perish as the murderer passes ultimate judgement upon them. Everyone is a suspect, and ultimately a victim. But who? How? Why?
This is a dark, macabre little book that gets under your skin. While the characters panic and flutter around the island the denouement is cold, concise and (almost) totally unexpected.
Definitely the most disturbing book I've read so far by Christie but also utterly enjoyable.