Last Train to Cork City

From the collection Dreamin’ Dreams; A short thriller in 2,ooo words.
The letter said; You knew in your heart that this day would come, and I only hope that we can part with dignity. By the time you get this letter I’ll be far away, starting a new life somewhere else. I want nothing from you, so you’ll never hear from me again.'
Unfortunately, Richard Mann didn't know how fatally true that was!