I don't mind the McKewan Marple stories - they don't try to emulate the almost perfect Joan Hickson ones (which are very true to the books). I don't even mind messing with the plot as long as it is done well, this story was not written as a Marple mystery but they managed to insert her quite well, *spoiler warning* the one thing that I can't understand is why was Gwenda killed? This plot twist just doesn't make sense, Kirsten had managed to get the whole household suspicious of her, so much so that her fiancé had asked her to leave the house, so why kill her? That makes the suspicion fall back on someone else in the house whereas if she had left they could have all blamed her. I think it was this that ruined it most for me. I don't mind making changes if they make sense but this one didn't. The original book gives much more build up to the character of Rachel and the resentment felt toward her by her adopted children but it is not unusual for film versions to fail in this. All in all this is probably the worst of the new Marples that I have seen which is a shame as I like a lot of the actors in it. I would recommend The moving finger or The body in the library over this one.