The bleak Arthur Miller-written 1961 American pastoral is rereleased to mark the 100th anniversary of the birth of Monroe, who plays a naive divorcee who meets three new suitors in her most serious and poignant role

The 100th anniversary of Marilyn Monroe’s birth, and a two-month retrospective at BFI Southbank, is the occasion for the rerelease of her most serious and poignant film, John Huston’s western drama and American pastoral from 1961. The film’s end of an era desolation feels more sombre than ever; the last film for both Clark Gable and Monroe and a melancholy late role for Montgomery Clift.

The Misfits was written for the screen by Monroe’s then husband, Arthur Miller, adapted from his own short story from a few years before. Miller’s opaque motivations are a subtext running under this movie; with a strangely uxorious dedication or vengefulness, Miller conceived the whole thing for Marilyn. It is the story of a passionate, vulnerable, childlike free spirit who finds a complex kind of excitement and freedom – flavoured with disillusion – with a real man after divorcing an emotionally blank city dweller. (Monroe and Miller divorced immediately after production.) The key irony of the title is that of course no one on screen is a misfit: they fit in all too well with the stark landscape and each other in their loneliness, their discontent and their yearning for something else or something more to live for.

Written for Monroe by then husband Arthur Miller, the role of Roslyn is contradictory and complex

What else can you call it but star quality? It was that – that ineffable, incalculable thing that makes certain actors on film seem almost holy – which made Marilyn Monroe one of the icons of cinema, perhaps the icon. That, coupled with her untimely death, which meant Monroe never grew any older on screen, is surely why she endures even now, 100 years after her birth. Whether performing Diamonds Are a Girl’s Best Friend in Gentlemen Prefer Blondes, vamping in Niagara or throwing off sparkling dialogue in Some Like It Hot, Monroe seems to belong up there on the big screen – so much so that you might believe she never actually existed down here with us.

It’s Monroe’s last picture, 1961’s The Misfits, that shows the star was mortal after all. It begins in Reno, where Monroe’s out-of-towner Roslyn gets a quickie divorce from her absentee husband (Kevin McCarthy) before falling in with a group of local oddballs, among them an ageing cowpoke, Gay Langland (Clark Gable), and a buck-drunk bronco rider, Perce Howland (Montgomery Clift).