"Her muscles clearly were not just for show. She pulled him into an empty chemistry classroom and closed the door. There were workstations and beakers and sinks with high faucets. A giant chart of the periodic table of elements, both a staple of every science classroom and a cliche, dominated the far wall. "Where is she?" Kristin asked. Adam wasn't sure how to play it, so he went with honesty. "I don't know." "How can you not know?" "We were supposed to meet for dinner last night. She never showed." "She just didn't . . . ?" Kristin shook her head in confusion. "Did you call the police?" "What? No." "Why not?" "I don't know. She sent a text. She said she needed some time away." "From what?" Adam just looked at her. Kristin said, "You?" "Seems so." "Oh. Sorry." Kristin stepped back, chastened. "So why are you here?" "Because I want to make sure she's okay. I figured she'd be at work. She never calls in sick." "Never,"