Lyra watched this exchange with a blatant curiosity, and as soon as they'd slipped through the front door and started to weave through the rooms toward the kitchen (where the large container of punch had been labeled amBROsia in permanent marker, with the BRO underlined, for effect) she turned back to Avery, dropping her voice to surreptitious levels. "Who's Xander?" she asked, close enough to him she'd be difficult to overhear. "Someone we gotta watch out for?"