Buffy the Vampire Slayer — Immortal by Christopher Golden and Nancy Holder

Buffy runs into a vampire named Veronique—unusual name, sure, but that’s not the real problem. This one knows who Buffy is, knows how she fights, and can’t be killed. Not permanently. If you dust her, she just comes back in a new body. That’s... inconvenient. Meanwhile, Joyce is facing a serious health scare, and it’s hitting Buffy hard. Angel wants to help, but his immortality only reminds Buffy of what she’ll lose—what he’ll never have to. Juggling emotional chaos at home, a streak of new vampire attacks, and a series of creepy grave robberies, Buffy has to pull her crew together and figure out Veronique’s deal before the vampire’s endgame plays out. Because she’s not just fighting solo—she’s part of something bigger. Something ancient. Something that plans to drink the blood of the last man on Earth.