Her small suitcase alternated between bumping her shins and bashing against the sides of the narrow stairway as she maneuvered up to the sleeper car. A short walk down another tight corridor and she found her compartment. When she opened the glass door, the lower berth was already made up. She closed the door and the privacy curtains, stripped off her clothes, slid between the sheets and fell asleep, lulled by the rocking motion of the train.
The moon was still high in the night sky when she woke up.She reached for her phone to read for a while and caught the edge of the curtain, revealing a small section of the dimly lit hallway. She looked across the hall and saw the curtains on the room across from hers were not quite closed. Her curiosity got the better of her and she peeked into that room from her vantage point in the dark.
Her phone was soon forgotten as she figured out what she was watching. She couldn't see his face but from the flickering light of what she thought was a tablet or laptop, she could clearly see his hand moving up and down. She assumed it was porn when she looked a little closer and watched his cock grow harder and larger as he touched his erection. She watched, fascinated, as he continued to stroke himself as the train swayed over the rails.