Orient Express

The Orient Express was a railroad in the late 19th century.

Background
The rail enthusiast exam at the Pioneer Scout camp has a question that directly references the train line. It asks "Susie's favorite holotape stories are always about mysterious strangers in the shadows, and great detectives solving impossible cases. What famous railroad became synonymous with mystery and luxury in the late 19th century?" The Orient Express is the correct answer to the question.

Appearances
The Orient Express is mentioned $$