Ag of the Christie on Screen

The story effectively retains the key plot points of the novel. The spinsters Hinchcliffe and Murgatroyd played by Pat Nye and Josephine Brown respectively were clearly coded as lesbians to audience members who are astutely observing the relationships between characters. In a departure from the novel, it is Hinchcliffe who becomes the final victim of the murderer,. leaving the more naive Murgat Troyd to fend for herself in the aftermath.