Harry Follows Snape and Malfoy, Overhears Their Conversation

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Harry uses his Invisibility Cloak to follow Snape and Draco, overhearing a tense conversation between them. Snape offers Draco his help, reminding him of the Unbreakable Vow he made to Narcissa Malfoy to protect Draco. Draco angrily refuses Snape's assistance, claiming he has a plan and doesn't need protection.