The lead character's trust issues raise the concept of whether being an authority figure is enough reason to inspire trust in others (the answer seems to be "no" -- "sometimes, a badge is just a badge," the main character notes while relating a tale of earlier betrayal by a fellow officer).
Extensive grisly violence, including beatings, shootings, bludgeoning, stabbings, and more. Cut throats gush blood; a body falls from a great height. A neck is broken bare-handed; an ice axe is used as a weapon; a head is slammed into a mirror. Fingers are amputated on-screen after frostbite damages them beyond repair. Close-up images of surgical procedures (including autopsies) and forensic investigations.
Brief male nudity in a group of streakers; glimpses of pornography; lingering shots of the main female character getting ready for the shower.
Frequent strong language throughout, including "f--k," "s--t," "hell," "bitch," "damn," "oh my God," "goddamn," and more.
Characters drink hard liquor; references to an unseen marijuana plant.