"My son was ordered to dispatch Albus," Poppy scoffed at the notion, making Narcissa nod in agreement, "and as Severus was a double agent, he must have informed Albus of the machination. That’s why Sev relented when Bellatrix and I twisted his arm into making the Unbreakable Vow to do the job himself if Draco failed. My son's no killer, and I believe Albus could easily run the war from his Headmaster portrait with Severus as the new Headmaster."