Before I Go to Sleep

In 1995, there was a movie called "While You Were Sleeping", a romantic vehicle for Sandra Bullock, but this 2014 similarly-titled work is very different: a thriller with Nicole Kidman in the central role as Christine, a woman who suffered a serious assault years ago and now forgets everything each time she sleeps. Two men are trying to help her, husband Ben (Colin Firth) and therapist Dr Nash (Mark Strong). Like most standard thrillers, we find that our assessments of the principals swing back and forth before 'the big reveal'.

There is a sub-genre of movies involving limited memory - think "Blink", "The Bourne Identity" or "50 First Dates" to name just a few - and "Before I Go To Sleep" is not the best of them (that would be "Memento") but, if one does not think too much about the implausible narrative, this is entertaining enough, helped by good source material (the best-selling novel by S J Watson) and the solid acting (Kidman with a good English accent, Firth not as straighforwardly charming as he is usually, Strong not as as unremittingly threatening as he is so often).