"Charmed: Charmed Again: Part 2 (#4.2)" (2001)
Leo: Are toi sure she orbed? Are toi sure that wasn't something else?
Phoebe: Leo, she disappeared. Bright, white, shiny... thingies came and she reappeared.
[pause]
Phoebe: What else could it be?
Leo: It just doesn't make any sense.
Cole: Why not?
Leo: Why would Shax want to kill a whitelighter?
Cole: Maybe he doesn't know she's a whitelighter.
Leo: Right... The source sends out his personal assassin but doesn't know who he's after.
[Piper clangs dishes in background]
Phoebe: Is it possible she didn't know she's a whitelighter?
Leo: No, why?
Cole: Because...