BBC - Happy Valley - Crime-Drama Series (on Netflix)

For its two seasons so far (3rd one coming out in 2019), Happy Valley has proven to be one of the absolute best crime-dramas I've ever seen - it's flawless.
The lead performance from Sarah Lancashire is excellent, the characters are layered, the writing is dark, funny, and intelligent, and it's intense and very suspenseful.

With only 6-episodes per season, it makes for two great binge sessions, and leaves you hoping for the next to come out ASAP.
Oh, and it's on Netflix.