Ich. Darf. Nicht. Schlafen.

I'd actually read the book before seeing this film so it was a question to ask ourselves: can we be bothered? In the event, it was worth it and I found that I was submerged in the film during the showing.

It's the sort of film that doesn't get made very much now in these days of big budgets, explosions, and cartoonish characterisations. But I'm glad it appears on the big rather than the small screen of TV because they brought in really good actors in the three leads. Particularly in the case of Nicole Kidman, she downplays her looks to come across as an ordinary woman approaching middle age, a brave choice for an actress.

The big surprise to me was Colin Firth who is way outside his normal range here and completely credible in the role. Mark Strong also is good in portraying a psychiatrist with empathy.

The film is very sombre but this is appropriate for the subject matter and really the director and cinematographer deserve a lot of credit for catching the uneasy tone of the book.

The reason I don't give it a rating higher than 7 is the unnecessary slasher scenes which could I think could have been done without so much blood and violence. Modern filmmakers should pay more attention to the work of someone like Hitchcock who suggested the gore rather than shoved your face in it. Still a mature film well worth seeing.

In a very real way, our memories are who we are - our identities as individuals depend in an almost terrifying way upon our ability to remember what we do (and what we've done), why we do it, and whom we love. That's why the notion of memory-making (and losing) looms so very large in the art we create. In the cinematic realm alone, characters whose memories are sorely compromised have starred in thrillers (Memento), romantic comedies (50 First Dates) and weepies (The Notebook). Before I Go To Sleep, based on the novel by S.J. Watson, is a chilling if not entirely effective blend of family drama and thriller, trading on the heartache and horror that comes with losing oneself every single day.

Christine (Nicole Kidman) wakes up every morning with no memory of the last fifteen years of her life. Ben (Colin Firth), the stranger who shares her life and bed, informs her that he is her husband and that she lost her ability to make new memories after a bad car accident several years ago. Any attempt to forge lasting memories seems futile - and yet, Christine tries. She receives a phone call from Dr. Nasch (Mark Strong), a neurologist who assures her that they've been working to improve her condition. He reminds her that she's been keeping a video diary every day: one that, upon review, suggests that Ben is not telling her the whole truth about their shared life and history.

It's to writer-director Rowan Joffe's credit that he mostly manages to make a very personal - and inevitably repetitive - journey of discovery both cinematic and chilling. As Christine awakes each day with her memory reset, Joffe finds inventive and intriguing ways to ramp up the spinetingling alienation she feels from her own life and husband. He captures Christine's terror, doubt and paranoia in the shuddery footage she takes of herself while hidden away in the bathroom from a husband she doesn't recognise. As the wheels within the narrative spin and turn, Joffe's camera makes villains and heroes out of everybody: Ben, in particular, shifts from one to the other on an almost daily basis, as Christine doubts and then trusts the love this man must have for her to stay by her side for so many years.

Unfortunately, Joffe can't quite sustain the tension throughout - the film sags noticeably in parts, as Christine flounders miserably between very few choices. There are many twists, as she uncovers people and secrets in her past that will inevitably disappear from her grasp within a day, including a final doozy of a revelation. But Joffe winds up wasting much of this tension and intrigue with an oddly definitive ending. In a film filled with questions, doubts and uncertainties, it feels completely out of place and emotionally untrue.

Joffe's cast, at least, is unreservedly excellent. Kidman delivers her most fascinating performance in ages, one that's equal parts vulnerable and strong. Her Christine is very much a victim of her circumstances - and possibly her husband - but Kidman skilfully imbues her with a steely determination to reclaim her life and identity against very poor odds. Firth, too, is fantastic, shading both light and darkness into his trademark charm - enough to make us believe that he's the kind of man who could love and/or betray Christine with all of his heart.

It's a shame, then, that the final frames of the film don't live up to its promise or potential. Joffe has hit upon something truly unnerving with his premise: Christine's condition provides the ideal backdrop for either the perfect crime, or a love story for the ages. Before I Go To Sleep quite effectively teeters between the two extremes, as does Christine, but ultimately fails to follow through when the true depths of its darkness are revealed.

The premise of Before I Go to Sleep is quite a good one. A woman wakes up each day with no memory beyond her early twenties; soon she begins to realise that some dark secrets are being hidden from her. It's sort of in similar territory to Christopher Nolan's early neo-noir Memento (2000), which was also a mystery/thriller about a character with a short-term memory loss condition. Like that one, here one of the interesting angles is that the central character has no idea if their friends really are friends or actually enemies. It's true that several aspects of the storyline require you to stretch your belief somewhat; however, many thrillers are similar in this respect, so this wasn't such a deal-breaker for me. The problem I essentially had is that while the idea may be pretty intriguing, ultimately the pay-off is somewhat mediocre and conventional. Piece by piece the puzzle is slowly unravelled but it doesn't end up presenting us with a picture that is very inspired or interesting and you sort of ask yourself 'is that it?'

The film opens with a woman, played by Nicole Kidman, waking up in bed with a man. She seems disconcerted and confused. Entering the bathroom, she encounters photos of the two of them. Leaving the bathroom, she sees the man, played by Colin Firth, who is now sitting on the bed. He tells her that they are married but that she had an accident, and that she can no longer retain memories more than a day. Mr Firth then goes off to work, and Miss Kidman is then phoned by a man, played by Mark Strong, who says he is her doctor, helping her to get her memory back. He instructs her to find a hidden camera, which she does, and finds that she has filmed herself, to leave messages to herself.

These are the opening scenes of the film which are also in the trailers too. Thus the film looked exciting and worth going to see. Which it is. The source material for the film is a 2011 novel by SJ Watson. This debut novel may be applauded, as may the film, however both are really not that original.

It may be recalled that in 'Total Recall' (1990), a humble construction-worker, played by Arnold Schwarzenegger, has a wife, played by Sharon Stone. A little bored, Mr Schwarzenegger goes on a mental holiday as a secret-agent, only to find that he really is a secret-agent. He finds this out, when escaping the bad guys, he finds a film of himself, telling himself, that very thing.

It may also be remembered that in Memento (2000), Guy Pearce also played a guy with no memory. This memorable, and remarkable, film, starts at the end, and the whole story is told in reverse as Guy Pearce, helped by Joe Pantoliano, tries to find out who killed his wife, using tattoos to keep notes.

Thus, 'Before I Go To Sleep' is not based on an original idea, but rather the concept is very familiar to those who have seen 'Total Recall' and 'Memento'. However, this does not make this a bad film, far from it. Whilst not original, the film is a little different from the other two films. They were more action movies than this one, which concentrates on the relationships.

The acting is superb throughout the film. Miss Kidman captures the emotions perfectly. We have no doubt that each day she wakes up in a strange bed with a strange man. Mr Firth too, acts well as the loving husband who has to explain everything to her, every day. Perhaps of the two, Mr Firth has perhaps the more demanding role. He has to show both exasperation and love, and he conveys his range of emotions well. Miss Kidman has perhaps a slightly easier role to play, that of the innocent woman, not understanding, or knowing who to trust. The ever reliable Mark Strong, playing the doctor, also gives a very subtle and ambiguous performance.

Rowan Joffe is the Director, and also wrote the screenplay. He has done very well to get very emotional and realistic performances from his trio of central characters, as well as from the supporting cast. Mr Joffe maintains the emotion, mystery, and tension, throughout the film. At times, you could be forgiven for thinking, that you were watching a film by that master, Mr Alfred Hitchcock. Parts of the film can easily be compared so, stylistically. However there are also many emotional kitchen-sink-style domestic scenes, all captured well.

If you like adult-themed mysteries and thrillers which deal with relationships, as well as messing with the mind, then this is the film for you.

Good film. 9/10.

Literally messing with your head, Nicole Kidman plays a woman who suffered Trauma to the head that makes her forget the past 15 years of her life when she falls asleep. She wakes up next to her husband, a man she does not know unforgettably played by Colin Firth, and as her doctor played by Mark Strong begins to help her deal with the illness things about her past begin to burst out like a kid taking out puzzle pieces and some how she has to put this puzzle together, even though when she wakes in the morning, the puzzle's messed up again. It's a strange mystery watching the protagonist solve the mystery that is her life. The whole thing would have come off one dimensional if it were not for Colin Firth's part as the emotionally distress husband who loves his wife but wants somethings to stay lost in her memory. It was an enjoyable ride watching the mystery unfold, definitely glad I saw it.