This is quite good. It does not have anything outstanding, necessarily, nothing... "unique", but what it has is very balanced and grounded. Even the overall dynamics of the show: it can feel slow compared to what a lot of "detective" shows go for these days, but there is still a lot of things going on in every episode. And meaningful things. Characters clearly have their past, and it is revealed bit by bit through-out the whole season. Alex is probably the best one of all, which is to be expected, of course.
He is also balanced. Properly human. Introduction may show him off a bit like your common "super smart, ideas from nowhere" kind of guy, something between House (from House M. D.) and Shaun (from The Good Doctor), but as the show progresses, we learn that's not the case. He still is smart and may be on the spectrum, but he is more than that. He has his chip on the shoulder, and he trying his best to be a good father. I mean, really, trying, not the "I am all work, but I wish I could be there for my kids" kind of thing, which we often see.
It really felt like there was considerable through put into the show, into putting things together, connecting them, and presenting them in a really coherent and (mostly) realistic way. Possibly having a whole bunch of books to use as source material helped a lot. Either way, was a good watch, and looks like there may be a 2nd season, which I would not mind.
My main complaint is the ending. Or rather 1 specific thing about it, that I do not get at all. Why would they want Bobby to confess instead of Ed, and why would they want to convict Ed for only 1 murder instead of 11, and frame him as "crazy"? Burning the book also did not make much sense, and even Ed said that out loud, that this was evidence. Were they doing this out of spite or something? But justice should not care about "spite", should it?