Hidden away, the siblings find solace in each other's arms, their bodies pressed together in the cramped space. He slides his hand between her legs, feeling her wetness as she moans softly, her breath hitching as he pushes a finger inside. She wraps her hand around his cock, stroking him as they lose themselves in their forbidden pleasure, their bodies moving as one until the sound of footsteps forces them to freeze, their secret moment shattered.