Cocoa was steaming and the coast slid by in the moonlight as the Night Mail made its Centennial Run, one hundred years to the day since its very first trip. Dr. Hartigan, the ticket inspector, held a doctorate in railway timetables and clipped every ticket with great ceremony. Tonight, the clipping stopped early. Dr. Hartigan was found dead in the Observation Car. Only one suspect was in the Observation Car, and that suspect did it.
Who killed Dr. Hartigan?
Clues
Who did it?
Tap a name when you’re sure.