I'm not sure what the critical reviewers were watching but I cannot agree with any of their comments. The series is suspenseful, not easy to predict hence an enjoyment to watch, and all the points come together in the conclusion except maybe one. First those that expect Marcella to be OK after her last session with the Dr clearly haven't paid any attention to the character or understand squat of the characters state. Every character has a role to play in the series that either gets to the ultimate conclusion or further develops the plot. Only the eventual fate of Alan is somewhat murky at least for now. The last scence even explains the lost of Laura the first DCI for Marcella. Clearly she hasn't been stalked by MI5 as it is quite evident that with a tad of thinking that 'DS Marcella' could not be dead despite DNA as the fire was occurring as she was with Henry when the TV showed the fire. The DNA goes back to the illegal in the subway that Marcella used for a DNA swab in the first series. Now whether people can make the links to how Laura who now runs a special organisation of undercovers determined all of this, well clearly this will all unfold in Series 3...yup they set it up for one. Maybe the Alan issue gets solved there as clearly the series writers know their stuff. For all of those critics who had a hard time with the final show, go back a watch it this time, I mean really watch it. This is not NCIS, Hawaii 50, or any of those other mindless mystey shows. Marcella is quite worth the time to watch and I found it superior to other series such as Luther itself a brilliant show.