Based on your search for you are likely referring to the fourth episode of the second season of the Netflix series Ozark , titled " Stag ."
While there are other shows with similar names, this is the most prominent production featuring an episode with that exact title and season/episode number. [S2E4] Stag
If you weren't looking for Ozark , here are two other series that might fit your query: Ozark Recap Season 2, Episode 4: 'Stag' - Vulture Based on your search for you are likely
Agent Roy Petty is increasingly unstable and obsessive. He sends Rachel Garrison back to the Blue Cat wearing a wire to spy on Marty. In a moment of rebellion, Rachel has a sexual encounter with a stranger while wearing the wire just to mock Petty. In a moment of rebellion, Rachel has a