He was here. I'm sure he was. [He sounds so insistent at first but a note of hesitation creeps into his tone towards the end. He tries to think back objectively, without letting the fear influence his memories because now that he thinks about it he's fairly sure there was something off about him. Something wrong with his voice, especially. And there was something he read about last time this happened, that he can't quite put his finger on.
He steps out of the shower, leaving the water running for Spike while still wearing that look of concentration, like he's close to putting all the pieces together.]