Although I read this some time ago, I've only just remembered about it, so will give my thoughts on it now.
This is not a Poirot novel, however it is another good book by Agatha Christie.
Ten people, all strangers, are invited/lured to stay at a house on a small remote island off the Devon coast.
Upon arriving they realise all is not as they thought, as they are all accused of murder by their host Mr U. N. Owen.
One by one, they are killed off, until (as the title suggests) there are none left.
Whodunnit?! Well, you'll need to read the book to find that out
It is cleverly written, and imaginative. Most (possibly all) of the murders are done to 'mimic' the rhyme of the 10 Little Indians, found in each of the character's bedrooms, which certainly helps add to the atmosphere.