And that was when Harry realized that there was exactly one person who’d originally told Professor McGonagall that the Dark Lord was still alive in the first place; and it was the crazy Headmaster of their madhouse of a school, who thought the world ran on cliches.
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Then Harry paused, because this time he’d managed to think it through one step ahead of his tongue, fast enough to not say the first name and test that had sprung to mind.
Voldemort. He’d summon Voldemort’s ghost and make it tell him the spells it learned from Salazar’s basilisk.
… Why are people still splitting hairs over it? It was answered a few chapters later.
At this point in the story Harry didn’t know about the basilisk yet.
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