Immediately after his discharge from the service, Gable returned to his ranch and rested. He resumed a pre-war relationship with
Virginia Grey and dated other starlets. He introduced his golf caddie
Robert Wagner to MGM casting. Gable's first movie after
World War II was the 1945 production of
Adventure, with his ill-matched co-star
Greer Garson. It was a critical and commercial failure despite the famous teaser tagline "Gable's back and Garson's got him".
After Joan Crawford's third divorce, she and Gable resumed their affair and lived together for a brief time. Gable was acclaimed for his performance in
The Hucksters (1947), a satire of post-war Madison Avenue corruption and immorality. A very public and brief romance with
Paulette Goddard occurred after that. In 1949, Clark married
Sylvia Ashley, a British divorcée and the widow of
Douglas Fairbanks. The relationship was profoundly unsuccessful; they divorced in 1952. Soon followed
Never Let Me Go (1953), opposite
Gene Tierney. Tierney was a favorite of Gable and he was very disappointed when she was replaced in
Mogambo (due to her mental health problems) by
Grace Kelly.
Mogambo (1953), directed by
John Ford, was a Technicolor remake of his earlier film
Red Dust, which had been an even greater success. Gable's on-location affair with Grace Kelly sputtered out after filming was completed.
Gable became increasingly unhappy with what he considered mediocre roles offered him by MGM, while the studio regarded his salary as excessive. Studio head
Louis B. Mayer was fired in 1951 amid slumping Hollywood production and revenue, due primarily to the rising popularity of television, and studio chiefs struggled to cut costs. Many MGM stars were fired or not renewed including
Greer Garson and
Judy Garland. In 1953, Gable refused to renew his contract, and began to work independently. His first two films were
Soldier of Fortune and
The Tall Men, both profitable though only modest successes. Gable's fifth wife, whom he met again in 1954 and married in 1955 after an on-again, off-again affair spanning thirteen years, was Kay Spreckels (full name Kathleen Williams Capps de Alzaga Spreckels), a thrice-married former fashion
model and stock actress.
In 1955, Gable formed a production company with
Jane Russell and her husband Bob Waterfield, and they produced
The King and Four Queens, Gable's one and only production. He found producing and acting to be too taxing on his health, and he was beginning to manifest a noticeable tremor particularly in long takes. His next project was
Band of Angels, with relative newcomer
Sidney Poitier and
Yvonne De Carlo; it was a total disaster.
Newsweek said, "Here is a movie so bad that it must be seen to be disbelieved". Next he paired with
Doris Day in
Teacher's Pet, shot in black in white to better hide his aging face and overweight body. The film was good enough to bring Gable more films offers, including
Run Silent, Run Deep, with co-star and producer
Burt Lancaster, which featured his first on screen death since 1937, and which garnered good reviews. Gable started to receive television offers but rejected them outright, even though some of his peers, like his old flame
Loretta Young, were flourishing in the new medium. His next two films were for Paramount:
But Not for Me with
Carroll Baker and
It Started in Naples with
Sophie Loren. At 58, Gable finally acknowledged, "Now it's time I act my age".
Gable's last film was
The Misfits, written by
Arthur Miller, directed by
John Huston, and co-starring
Marilyn Monroe,
Eli Wallach, and
Montgomery Clift. This was also the final film completed by Monroe. Many critics regard Gable's performance to be his finest, and Gable, after seeing the rough cuts, agreed.