Dench and Broadbent do a fantastic job charting the devolution of Iris' faculties as she struggles with Alzheimer's; the problem with this film is during the flashback scenes. Winslet is average, not great in her portrayal, but that's partially because the script doesn't present Iris Murdoch in her early days as a very sympathetic character. Instead of coming off as a free spirit she's far more of a sexually confused egotistical dilantette who uses everyone around her. Scenes where Iris is supposedly revealing her shady past and her motivations fall completely flat...there's not enough of a sense of vulnerability or that she really NEEDS her husband. Ultimately that takes away from the Dench-Broadbent storyline. I felt badly for Broadbent's character as he clearly was in way over his head trying to take care of Iris, but I was puzzled as to why he stayed with her in the first place as she treated him so awfully when they were young.
The flashbacks also aren't handled quite right, the interaction between the "present" and past scenes is too jarring. I suspect that it was a conscious choice to do it that way in an attempt to describe the ravages of Alzheimer's, but the film really suffers as a story because of it. This film would have been better served as a straight linear narrative without the constant flashbacks, focusing on either the young or old stage of Iris' life.
