As a longtime mystery buff, Agatha Christie's "And Then There Were None", previously published as "Ten Little Indians" stands out to me as one of the all-time greats of the genre. This 1939 novel embodies everything readers love about Christie: an ingenious plot, cryptic clues, an isolated setting, and a cast of strangers locked together while a killer stalks them one-by-one. Even over 80 years after publication, this masterpiece still thrills and intrigues. Let's break down the various elements that make "And Then There Were None" an absolute classic.