Xavier Quinn killed Dominique Kohl after uncovering secrets

In "Reacher" Season 3, Xavier Quinn, using the alias Julius McCabe, killed Dominique Kohl after she discovered his involvement in selling military intelligence. He abducted her and tortured her, leading to her death. Kohl and Private Anthony Frasconi attempted to arrest Quinn, but he killed Frasconi during the confrontation. Reacher later found Kohl's body, tied up and bleeding, and confronted Quinn, shooting him but not fatally. Quinn has since returned under his alias, continuing his criminal activities. Meanwhile, DEA agent Susan Duffy deals with guilt over an informant's involvement with Quinn, reflecting Reacher's own regrets about Kohl.