After Meredith tells Maggie what she knows about what happened between Riggs and Owen's sister, Maggie confronts Riggs. He's a good guy and a great surgeon. Why would he lie? Riggs states that he didn't lie to Meredith. Everything he told her was true -- he just left some parts out. Watch this scene from Season 12, Episode 19, "It's Alright, Ma (I'm Only Bleeding)" and don't miss Grey's Anatomy THURSDAYS 8|7c on ABC.