<Li> Jump up ^ Ed Westwick was originally cast in the role of Mickey Argyll . </Li> <P> The mystery drama was adapted for the screen by Sarah Phelps who was behind the previous two Christie adaptations for the BBC over the Christmas period (And Then There Were None and The Witness for the Prosecution). Phelps has admitted to changing some elements of the story, particularly the ending, and when asked about what the purists might think, she responded "I don't give a bollocks about people saying it has to be pure . No, it doesn't . If you want a pure adaptation, go and get someone else to do it ." However, the BBC and Phelps have come under criticism for changing the plot with many online users stating that Agatha Christie knew what she was writing about . One user said, "Why doesn't (Phelps) write her own books if she thinks she can do better than someone who's sold millions of books ." (sic) (recte?) </P> <P> The three - parter was filmed in, and around, the town of Inverkip in the Inverclyde district west of Glasgow . Ardgowan House was used as the Argyll family home of Sunny Point . </P> <P> The series was originally supposed to have been broadcast over the Christmas and New Year holidays of 2017 / 2018, but was cancelled due to the sexual assault allegations against Westwick . Its broadcast over the Eastertide of 2018 has split the series into three episodes across three weeks which has lead to some dubbing it "ordeal by iPlayer". </P>

Where is agatha christie ordeal by innocence filmed