Yeah I like the reveal of the killer, there's just very much a feeling of "well... now what?" after it's resolved. And the back half of season 2 feels rough and kinda directionless, even though it has it's moments.
I do think it swings things back into being really good and interesting by the finale tho. The last episode of season 2 is an all-time great piece of television. But by that time it seemed too late. The show definitely would have benefited from keeping the mystery of Laura's murder looming and propelling it along.