Like others have said, this show is not for everyone. It's crude, dark, vile and nasty, but if you have a dark sense of humor, this is the funniest politically incorrect show I have seen in a long time. Keep in mind it was based on a comic, and the visuals feel like it jumped right off the page on to the screen.
Happy Valley is a dark, funny, multi-layered thriller revolving around the personal and professional life of Catherine, a dedicated, experienced, hard-working copper. She is also a bereaved mother who looks after her orphaned grandchild.