It's watchable. The build-up is really good. Gillian Anderson, as usual, puts up a splendid show. However, it's riddled with loopholes. How come they were treating Spector as a prime suspect, all of a sudden, just because he happened to be caught in a random CCTV footage in a park, sitting with the victim? Is that even remotely a reason to suspect? I mean, there could be a thousand men like this, that Sarah might have been in close proximity with during her last few days. Also, Spector volunteered to provide information. None of her colleagues, her male acquaintances were questioned even. The show has some ridiculous plotholes indeed.