20 Amazing TV Plot Twists You Wish You Could Relive
9. And Then There Were None - Justice Wargrave Did It
No one can do it like Agatha Christie. Even now, all these decades after her passing, Dame Agatha remains the absolute master of the whodunit, with And Then There Were None standing out as her arguable masterpiece. 2015's BBC adaptation of the book really did it proud.
With atmospheric visuals, a haunting screenplay, and exquisite performances from a phenomenal, all-star cast, this is a contender for the best Agatha Christie adaptation of all freaking time. While writer Sarah Phelps made some (largely effective) deviations in places, the solution to the mystery remained intact. And hot damn, it's a doozy.
As in the original novel, the killer is Justice Lawrence Wargrave (a fantastic Charles Dance), a former judge who'd apparently been shot dead earlier in the story. Working with another one of the guests (whom he later murdered), Wargrave faked his death and successfully fooled everyone else. All of the other nine were guilty of various crimes but had evaded justice, and Wargrave, now terminally ill, decided to exact one last bit of justice before he died.
As a twist that's utterly shocking yet still feels entirely logical, this was a watertight solution to the mystery and, in a departure from the novel - where Wargrave's guilt is related through a suicide note - we're gifted a fantastic final scene where Wargrave reveals himself to the last victim, child-killer Vera (Maeve Dermody), before killing her.