There are action movies. There are subsets of action movies such as the martial arts, heroic bloodshed and the “Die Hard on a [insert mode of transport here]”sub-genre. And then there are Liam Neeson action movies which are a unique a form of films in their own right. Because few actors have achieved what Liam Neeson has done. Some actors start their careers stuck in low budget, exploitation films, only to claw their way up the greasy pole until the wow us with a serious performance and effectively re-invent themselves as a quality character actor. Liam Neeson has done the reverse. After making his mark as a serious actor, with an Oscar nomination under his belt, he then took a serious change in direction to become an action movie star in his mid-fifties. In doing so he found himself a completely new audience and proved a star at the box office. It’s a curious yet strangely laudable achievement. This leads us neatly onto The Commuter. It’s Neeson’s swansong to the action genre, as he has subsequently announced that he’s retiring from this type of movie.