Stabler unknowingly affects his situation with the Brotherhood on Law & Order: Organzied Crime. "Friend Or Foe" is the 22nd episode of the show's second season.
Donnelly: Stabler's undercover. He's been investigating the Brotherhood for the IAB and OC. Other Cop: What? Donnelly: Lying prick's gonna burn us all. Cop: So what do we do about it? Donnelly; We do what we always do with a rat. Exterminate him.