He gave her an arch look, at her answer, but didn't press. Instead, he tackled the question.

"When werewolves are on their own, it's usually because they're so new they haven't attracted anyone's attention yet or because they're old enough they choose not to bother being social. But this M.O. doesn't look like either of those. Too messy for the latter, not messy enough for the former."

A simplification, but that was the gist.