How did the book ten little Indians end?

Answer 1

All the 9 killers who had escaped justice were killed in a different way. The first one was poisoned with cyanide, because he was the less guilty (he had killed two children in a road accident, therefore there had not been any intent to murder them). The remaining 8 will live their remaining days or hours in fear, the most guilty one dying last (a girl who was made to hang herself). The others were shot, injected with a deadly substance, killed with an axe, crushed by a statue, etc. The killer dies last, killing himself - I shall not reveal how.

Answer 2

In the book "Ten Little Indians" by Agatha Christie, the mysterious murderer turns out to be Justice Wargrave, who fakes his own death in order to frame the others for the murders. He reveals his plan in a letter and then commits suicide, leaving Vera Claythorne as the sole Survivor. She ultimately goes insane, haunted by guilt over a past crime.