The Jonathan Page

From the official website, on "Conversations With Dead People" Jonathan and Andrew break into Sunnydale High, excavation equipment and architectural plans in hand. Their plan: find the Seal of Danzalthar, tell Buffy about it, and help her save Sunnydale. They'll find redemption, then maybe Buffy will invite them to join the Scooby gang (yeah, right).

There's only one problem: Andrew's being coerced by the ghost of Warren, whose plan doesn't sound anything like Jonathan's. Andrew's looking to become a god, which doesn't bode well for the whole "saving Sunnydale" thing. Warren's ghost points Andrew in the direction of the Seal, and the guys start digging in the place they believe it's buried.

.....

Andrew and Jonathan unearth the Seal of Danzalthar, discussing what they want once they complete their task. Jonathan misses his old life, his friends, the real world. Andrew, however, is bitter over his past, and his anger no doubt helps him as he stabs Jonathan once the Seal is uncovered.

Jonathan's body falls upon the Seal, which illuminates when his blood spills onto it.