The Killing is based on the wildly successful Danish television series Forbrydelsen and tells the story of the murder of a young girl in Seattle and the subsequent police investigation.
The Killing ties together three distinct stories around a single murder including the detectives assigned to the case, the victim's grieving family, and the suspects. Set in Seattle, the story also explores local politics as it follows politicians connected to the case. As the series unfolds, it becomes clear that there are no accidents; everyone has a secret, and while the characters think they've moved on, their past isn't done with them.
These are all shows where some of my favorite characters are doing bad things for good reasons (or just bad things, in a bad as way so that I love them anyway). For clarification killing bad people are included as doing a bad thing for a good reason, officers of the law killing on duty is not included.