In the Bellatrix theory I’d interpret that as meaning that Lucius seriously doubts that Harry would survive something that manages to off Bellatrix. But I acknowledge that the phrase sounds like it means something more than that.
In the Bellatrix theory I’d interpret that as meaning that Lucius seriously doubts that Harry would survive something that manages to off Bellatrix. But I acknowledge that the phrase sounds like it means something more than that.