Only superlatives will do to describe Keaton’s hilarious Civil War dramatic comedy. Made in 1927, at the culmination of the silent era, it sees the graceful, stone-faced genius at his inventive best. Annabelle Lee (Marion Mack), fiancée of Western and Atlantic railway engineer Johnnie Gray (Keaton), wrongly suspects him of cowardice. When, in a preamble to hostilities, Union spies abduct her – along with her rival for Johnnie’s affections, the titular locomotive – he hot-rails it in pursuit of them both. What follows is a thrilling adventure yarn, based essentially upon a pair of hurtling and symmetrically opposed train chases, that is as superbly structured as it is executed.