Marple - Why didn't they ask Evans? -

I didn't like this much, to be honest. It's so confused, I thought it might be a good one at the beginning, but then it became a real mess, with nothing to compare with the real Christie's story.
It starts with what seems to be a silly boy playing alone, but then he hears a noise and sees a man who has fallen on the rocks. The man's barely alive, and before dying he has time and strength to say only a few words: Why didn't they ask Evans? He is identified as a Mr Pritchard. When Bobby has to go to the inquest, he meets an old friend on the train: a young woman called Frankie. She's lovely, the nicest thing in the movie.
When she asks him if he told everything, his Yes is rather unconvincing, and this is because he didn't mention the last phrase the man said before dying. He writes a letter to a man (called Trent) he thinks to be a relative of the deceased  mentioning those words.
Miss Marple is staying at Bobby's house because she's friends with his mother and has known him since he was little. She helps them a little, putting them on the right track by finding the dead man's car. Frankie is rather annoyed, and calls her 'a silly old woman' while Marple walks like a hiker "keep it up" :-/  They find a map and a key in the car.
I understand Frankie, she doesn't know Miss Marple and this was her adventure, with Bobby. Frankie comes from a rich family, and invites him to a party at her house, but when he goes there he sees her surrounded by rich people, smiling, so he goes away without saying hello. Silly boy,  she wanted him to go. Anyway, he goes back home on his bike when a car comes up behind him, and he tries to speed up in his bike :-/  silly boy again, he eventually falls off the road, and when she hears about this Frankie is all excited: did Trent try to kill him after receiving his letter? But here Bobby is still bothered by her smiling at someone else at her party and scorns her enthusiasm, so she goes off on her own. She follow the 'map clue' and goes to Castle Savage; she crashes her car just outside as an excuse to go in. She meets butler Wilson, Roger playing the piano, strange boy called Tom playing with snakes and his sister Dotty who tells her 'please stay' and their mother Sylvia. Doctor Nicholson visits her and then she learns that Sylvia's husband Jack recently died and that he used to work with a Mr Evans.
Marple helps Bobby get aways from his mother by pretending to go to London and have Bobby taking her. Instead, he leaves alone on the train to London, to follow the 'key clue', while Miss Marple goes to Castle Savage instead as Frankie's governess. At first Frankie is rather annoyed, then Marple tells her "something's not right. Wouldn't want to be here without a friend" so Frankie goes from "I don't need help!" to accepting her and sharing her informations with her.
Bobby has found the dead man's hotel and from his room he learns that the man was not called Pritchard, he was John Carstairs.
Doctor Nicholson's wife Moira says that Jack never loved Sylvia, and used to hit on every girl, including her. Bobby comes to Castle Savage as her driver, bringing her her clothes (clothes? for how long does she intend to stay? All this because they can't be so rude as to tell her to go home?).
Bobby meets beautiful Moira (who seems to be afraid of her husband) but is jealous of Roger flirting with Frankie. She rather appreciates Roger's flirting with her, but is jealous of Moira.
Frankie rather unreasonably thinks Evans did it, even after he dies. Bobby suspects the doctor (probably because of Moira) or Roger ( because of Frankie).
It was very very annoying the way they all treated him because they believed him to be her chaffeur, as if it was his place to be humiliated and offended by those who think they're better than him only because they have more money and do nothing all day long, how stupid.
One night he gets tired of this and reveals to everybody in the house that he's actually her friend come to investigate the death of John Carstairs, then he has another fight with Frankie, and the "bloody kids" expression that Marple had on her face after that was the best thing of the whole episode :-p
After Mr Evans' death, the stupid, pompous commander shouts at everybody and eventually wants to arrest dr Nicholson.
Marple goes talking to Tom and Dotty, saying she knows that Carstairs left them their father's will to keep safe, because he knew something was wrong. In the will, he leaves everything to a orphanage in China, but the witnesses are strangers they don't know. That day there was nobody in the house. 'how strange that they didn't ask nurse Florrie to witness the will'...
Marple tells us a bit of family history (this is just guessing, but she guesses right apparently). She met and married George and they were happy, but then they went to China and it was like rules didn't apply anymore and Sylvia had an affair with George's brother Jack.
When Bobby and Frankie go away Marple stays because she knows something's gonna happen. Frankie and Bobby come back very soon, simply because both Moira and Roger have mentioned Sylvia's birthday :-/ so what? what's so suspicious about that? Anyway, that night Moira and Roger enter Sylvia's bedroom, ready to kill her. Marple tries to stall by telling the whole story of how it went, then poor Sylvia was all "do it, I want to die" and now Moira hesitated because this is not how she wanted it, and they all act. Tom shoots Roger, Bobby tries to stop Moira but can't hurt her because she's beautiful, but Wilson takes her syringe and injects her with the poison she intended for Sylvia.
Moira and Roger said they were Sylvia's son and daughter, left in China. He was lucky enough to be adopted by a family (an English family I think) but she wasn't, and she remained there to 'entertain the soldiers'. What does it mean? They were Sylvia and George's children, and Jack left them behind? We knew nothing of the existence of other children until a moment before.
Moira killed Jack by pretending to accept his avances, then Roger pretended to be Jack to make a new will, and called as witnesses the two new gardeners that didn't know the real Jack. The family and Wilson were away because of some reason I didn't get , and Florrie had the day off, so Moira dressed as a maid to let them in, so nobody who knew Jack was there.
Carstairs was the old lawyer who knew Jack well, and he knew that  will could not be right, and he was very close to the truth when he was killed.
Now, as they put it it doesn't seem to make much sense, or maybe I missed something big time.
It is revealed that Evans is Florrie's surname, and the answer to the question "why didn't they ask Evans?" should be : because she would have known that it was not Jack making that will, but put like this I say: because it was her day off and she wasn't there!
Again, it is rather strange that Roger doesn't know who Evans is. He thought they referred to Jack's old partner and killed him? so why at the end Roger asked 'who is Evans?' and how could he not know it was Florrie? If he didn't, how could he know where Carstairs was going and be there to kill him? If he followed him, why didn't he dispose of the car too?
It doesn't make sense. It is completely changed from the book, and for the worse.
At the end of the film, Marple reveals that Florrie Evans in no less than Bobby's new maid, recently married and now called Roberts. I loved her bit at the end. She wants to be called Florence now. She says: "Met Mr Roberts. Treats me like bloody Princess Margareth" :lol: Good for you Florence, way to go :-)

ITA perché non l'hanno chiesto a Evans?