“Fuck, just like that,” Theo’s voice carried through the thin wall, rough and low. “Take it deeper.”

Molly froze in the dark hallway, keys still clenched in her fist. Rainwater dripped from her coat onto the floorboards. She had stayed late at the campus library on purpose, hoping the house would be quiet by the time she got home. Instead the sounds hit her the second the front door clicked shut.

Katie’s moan floated out next, high and shameless. “Harder. God, Theo, harder.”

Molly’s pulse slammed against her throat. She forced her feet toward her own room at the end of the hall. Every step made the floor creak. The...