When she got home, she almost didn’t make it to the shower. She was still so tired, so out of breath. She’d stopped running three blocks ago, walked the rest of the way, and ended up dragging herself up the steps, barely able to think straight.

She didn’t notice anything. She didn’t notice that she’d left the door unlocked. She didn’t notice that the message on her phone was blinking. She didn’t even notice that she wasn’t the only person in the apartment.

She ...