An elderly fan of chivalric literature, Alonso Quijano, decides to become a knight-errant and sets off in search of adventure on his aged mount, Rocinante.

Indeed, in this expansive, even elegant movie, Myung-hoon turns from assassin to knight-errant in pursuit of a virtue he barely has time to understand.

But perhaps most of all there’s Jack Reacher, the loner knight-errant of Lee Child’s novels.