“So, you wanna tell me what really happened down there?”
    “Nothing,” Spike said, annoyed, “it was just stuff. Memories. Nothing important.”
    “Nothing important doesn’t usually make your hands shake,” Buffy said softly.
    Buffy tries to help Spike find the source of the First’s trigger, after she releases him in Lies My Parents Told Me. It is not a short or pleasant journey.