He nodded, seeing the logic in what Baileigh and Mohinder had said, but when Sylar said their mother was in his apartment he couldn't help himself. He stared, eyes wide, and for a long moment just tried to figure it out.

Finally, he frowned. "She... she must have known you would come to see her, and wanted to do it on her own terms..." He didn't really want to examine why that made him so uncomfortable, until he realized she already had a key to his own apartment.