Great series. Perhaps not as snappy as others, but then, it's depicting an actual case and I guess they were sticking to the series of events rather than manipulating them to make a fast-paced tv show.
I know an ex-prison guard who knew Bamber well inside and he says he is totally guilty, based on what he knows about murderers and psychopaths etc after years of getting to know how they behave.
However, after this, and after watching many documentaries over the years I'm always left with the feeling his conviction rests on a lot of circumstantial evidence, but nay actual concrete evidence. If the case happened today there'd be better DNA evidence and much better police investigating, but if it happened today I don't reckon he'd be convicted if that was all the evidence they had.