From the writing, to the acting, the cinematography and the music the show is a perfect harmonizing of various motifs. Noir, suspense, mystery, horror, politics, and social proclamations. This has everything.
The overall premise of the show is as follows:
The first season covers the first two weeks of the investigation and has three main storylines: the police investigation into Rosie's murder, the attempts of her family to deal with their grief, and the fluctuating electoral fortunes of a political campaign that becomes embroiled in the case.
Believe it or not, there's a lot here. This sounds like a mere 2 hour movie, but they do a splendid job of drawing it out.