Originally Posted by The 12th Doctor:
“Overall, Series One and Two were undoubtedly the best. Three just dragged on too much and little actually happened. So much character development was missed. Sally Ann and the kids just sort of faded away, the suicide attempt stuck in there as a tease that went nowhere. Hints of a possible nine more murders that went nowhere. The nurse, who went nowhere. Inspector Merlin whose arm injury went nowhere. That hanging storyline with Jim messing on with that MP bloke went nowhere.
Nevertheless, the drama was all there. I just think that Spector should have been awake by the end of episode two and up and about by episode three. Instead he was still in hospital by episode four.
I'll buy series three but I'll always favour series one and two and rewatch them often!”
Series 1 was so scary to me that I had to watch it in daylight hours

series 2 seemed like a parody and I wasn't fully engaged in it, but series 3 drew me in again. I thought the first 2 episodes were slow, but the intrigue about whether he was feigning his memory loss and whether the nurse was going to be his next victim had me hooked. His character was way beyond any possible redemption, but it was interesting to find out what had made him the way he was.
Of course there were lots of moments where you couldn't believe the stupidity of those in charge. Having his hospital room in sight of his victim's bed with only minimal security in the corridor. Allowing a young, attractive dark haired nurse who was his victim type to be alone with him. Similarly, after his attack on Stella and Anderson, wouldn't he have been taken into a maximum security prison? But apart from the obvious plot holes, I thought series 3 was a huge improvement on series 2.