There is a very slight suggestion that two characters may be having an affair, with the term "sexual relationship" used, but that's it. The series is clean beyond that.

Multiple dead bodies are shown at crime scenes, sometimes with lots of blood. Could disturb some.

Episodes 1 and 2, no profanity. Episode 3, one use of "Oh, no, God..." and near the end, the young constable bites down on something and says, "Jesus."