The first photo -- the one with the FBI stamp on the back? That's all it took to creep him out. And the second photo, of Max clearly covering her? It felt like Liz might have been in a lot more danger than she ever told him. Peter has to remind himself that whatever was stalking Liz back there, it wasn't here. Liz was safe here. And he'd continue to make sure she was safe.

He almost managed to squelch those feelings by the time Liz got to the third photo, and that managed to completely annihilate them, swallowed up by a massive feeling of insecurity. Insecurity Peter knew shouldn't feel, but felt anyway.

"It's fine, Liz," he calls after her, pushing himself off the pool's ledge. It's not true, but he doesn't want her to be upset. Barefooted, he maneuvers himself so he's in front of her. "It's fine."