The Harvest (Season 1, Episode 2):

Cut to inside the mausoleum. Buffy comes in slowly, looking and listening. She scans around. Satisfied that no one's there, she walks down the steps to the floor. She hears a rat behind her and twists to look toward the sound. She continues and finds the tunnel access. It's locked with a chain. She lifts the lock. Angel appears behind her.

Angel: (exhales)

Buffy: I don't suppose you've got a key on you?

Angel: They really don't like me dropping in.

Buffy: (faces him) Why not?

Angel: They really don't like me.

Buffy: How could that possibly be?

Angel: I knew you'd figure out this entryway sooner or later. Actually, I thought it was gonna be a little sooner.

Buffy: Sorry you had to wait. (exhales) Okay. Look, if you're gonna be popping up with this Cryptic Wise Man act on a regular basis, can you at least tell me your name?

Angel: Angel.

Buffy: Angel. It's a pretty name.

She turns to the tunnel entrance.

Angel: Don't... go down there.

Buffy: (turns back) Deal with my going.

Angel: You shouldn't be putting yourself at risk. Tonight is the Harvest. Unless you can prevent it, the Master walks.

Buffy: Well, if this Harvest thing is such a suckfest, why don't you stop it?

Angel: 'Cause I'm afraid.

She looks at him for a moment and then spins around quickly, kicking open the doors to the tunnel. She turns back to him.

Angel: They'll be expecting you.

Buffy: I've got a friend down there. Or at least a potential friend. Do you know what it's like to have a friend?

He lowers his eyes as a look of sadness fills them.

Buffy: That wasn't supposed to be a stumper.

They look at each other a moment longer.

Angel: When you hit the tunnels head east towards the school. That's where you're likely to find them.

Buffy: You gonna wish me luck?

Angel says nothing. They look at each other for another moment, then Buffy turns and heads into the tunnels. He watches her go.

Angel: (whispers) Good luck.