I love Agatha Christie Novels!
If you love the book then you got to check British drama television series. 
Really? And then there were none is my favorite novel of hers
Agatha Christie's Poirot
Poirot (also known as Agatha Christie's Poirot) is a British mystery drama television series that aired on ITV from 8 January 1989 to 13 November 2013. David Suchet stars as the eponymous detective, Agatha Christie's fictional Hercule Poirot. Initially produced by LWT, the series was later produced by ITV Studios. The series also aired on VisionTV in Canada and on PBS and A&E in the United States.
The programme ran for 13 series and 70 episodes in total; each episode was adapted from
I'd Tell You I Love You, But Then I'd Have to Kill You
I'd Tell You I Love You, But Then I'd Have to Kill You (2006) is a young adult fiction novel written by Ally Carter and is the first book in the Gallagher Girls series. In October 2007, a sequel was released titled "Cross My Heart and Hope to Spy".
Synopsis.
The Gallagher Academy for Exceptional Young Women is a fairly typical all-girls school—that is, if