In the Orient-Express II

Publisher's blurb:

The wood of the carriages throbbed, and the Orient-Express seemed to breathe.
It had accelerated during the night to an inordinate speed. God knows where it would take us. We were prisoners on this cursed train.
It was clear that we had to take matters into our own hands.
In any case, we'd told so many stories during our first evenings on board that, for the rest of the passengers, we were their only hope of survival.
We had to get to the locomotive, the head of this living and demonic machine, no matter what...