From the beginning a story-line that draws you in and holds you spellbound. Later on, it does get complicated - if you're the kind that likes involved mystery plots then you'll love it.
It is a dark piece and it is true that one can't actually warm to many of the characters – even the victims usually have their dark side.
I like the skillful changes of pace throughout, you're never more than a short time away from the next gripping high point but there are plentiful pauses to help you assimilate what is going on.
I thought most characters were acted very well indeed. The main character Juan Elias played by Francesc Garrido I've seen described as "wooden" but I thought that this was actually a deliberate reflection of his inscrutable screen persona. As he is faced with more challenges later in the series I think you can really see the subtlety in how Francesc portrays him.
Like many I was very disappointed to be left hanging at the end of episode 10. I speak Spanish and soon discovered that in Spain there were another six episodes available. The story-line up to the last episode in the UK did not make it a natural moment to break the series.
In answer to previous questions I can confirm that if you purchase the box set of DVDs from Spain, with the title and packaging in Spanish – containing 6 DVDs you will get all episodes 1-16.
The UK version contains fewer CDs and 10 episodes. To be clear – the Spanish release does not, I repeat, does not have English subtitles. I found the dialogue and the plot a bit too fast to follow comfortably in Spanish as I am not a native speaker, but there are Spanish subtitles intended for the hard of hearing. I used these and it made all the difference. No difficulty in following the dialogue. I doubt that beginner or intermediate Spanish would suffice.
The 6 disc version is available on some Spanish websites with delivery to the UK. Or try ebay - search for 6DVD set Se Quien Eres.