This is the impressive made-for-Swedish-TV series of three films dating from 2011 and in the original language with subtitle options. These offer the full length films seen in the TV series and are not the shorter cinema release versions. Consequently they make far greater sense of the complex story-lines of the three substantial, gripping and award-winning books. This is obviously the version to buy.The title role of Lisbeth Salander is convincingly played by Noomi Rapace and she is supported by Michael Nyqvist in the riole of Mikael Blomkvist. The remainder of the various casts over the three films is, without exception, of the highest quality and the filming delivers on maintaining both drama and atmosphere over the whole extended time span.In the interest of avoiding 'spoiling' the plot line nothing of that need be added. The books have been absolute best sellers and offer a considerable amount of detail throughout which is unfailingly essential to fully understanding the plot and the characters and their motivations. The films largely keep to the books and offer a deeply satisfying alternative to the books. Nevertheless it is an alternative and reading the complete saga in book form is probably an imperative! The sequence will be a matter of personal choice or opportunity but logically and helpfully, it would seem to make more sense to read the full printed version before watching the films. In this way it will be easier to follow the areas where short-cuts are made within the re-telling.However, this review is not intended to discuss the actual film as by now it will have both its supporters and detractors. Entering into those conflicts is not the purpose of the review which is aimed squarely at the many supporters of this set.Essentially, for all of those who are keen supporters of this TV series the only issue of vital importance will be whether the Blu-ray offers a technically successful product.For this reviewer the answer is a clear affirmative. The BD transfers offer firm colours and there is a satisfying perceived depth of imaging. The whole set simply becomes more 'real.' The series, which is so concerned with close characterisation, benefits considerably from this enhancement of reality. The soundtrack is convincingly 'real' too.The degree of improvement experienced from this BD will also inevitably depend on the replay equipment used. The following technical information is intended to be a guide to aid in assessment.The screen used for this review is only of moderate dimensions being a 40 inch television screen. However, the television is a high performing 4K unit which delivers a compensating positive effect. The moderate screen size lacks the impact of larger screens but is less critical of film faults.However, the contributing player is, unusually, able to separate the audio and visual HDMI signals before they leave separately to the television and pre-amp. That feature enhances both the visual and audio elements of the output. The audio, not so critical in the case, delivers an unusually wide-ranging and revealing performance. Its precision is equally revealing of film scores.Readers with alternative equipment will have to interpret this review bearing in mind their own equipment and its comparative advantages and disadvantages.The disc offers purchasers with suitable replay equipment a substantial improvement over the previous DVD.In summary this BD set offers a transfer from good quality 2011 film stock and enthusiasts should find it both essential and rewarding to buy.