Mitchum would become a signature actor in the style of film known as
film noir (a style used in many genres but most commonly in gangster and crime movies). His first entry into this world of dark crime stories was the well-regarded
B-movie,
When Strangers Marry, about a psychotic serial killer. One of Mitchum's early film noir outings,
Undercurrent, featured him playing against type as a troubled, sensitive man entangled in the affairs of his brother (
Robert Taylor) and his brother's suspicious wife (
Katharine Hepburn). The ill-received film was
Vincente Minnelli's first and last film noir as a director.
John Brahm's
The Locket (1946) featured Mitchum as a bitter ex-husband to
Laraine Day's
femme fatale, while the
Raoul Walsh-helmed
Pursued (
1947) combined the
western and
film noir genres, with Mitchum's character trying to remember his past and find those responsible for killing his family.
Crossfire, also released in 1947 featured Mitchum as a member of a group of soldiers, one of whom killed a Jew. It featured themes of
anti-Semitism and the failings of military training. The film, directed by
Edward Dmytryk, was one of the most critically acclaimed of the year, garnering five
Academy Award nominations.
Following
Crossfire, Robert Mitchum starred in what was arguably the definitive film of his career,
Out of the Past (aka
Build My Gallows High), directed by
Jacques Tourneur and benefiting from the cinematography of
Nicholas Musuraca. Mitchum played Jeff Markham, a small-town gas station owner whose unfinished business with gambler Whit Sterling (
Kirk Douglas) and one of the most memorable of all femmes fatales, Kathie Moffett (
Jane Greer), comes back to haunt him. Though the film was ignored by most critics upon its release, the film was a modest box office hit and has steadily gained the highest critical praise from both film journalists and filmmakers since its release. Mitchum was photographed again by Musuraca in the
Robert Wise "psychological western"
Blood on the Moon the following year.
Mitchum's cynical, mischievous attitude continued through adulthood and led him to shrug off fame as a fluke. On the set, he often played pranks on fellow actors and crew. His expulsion from
1955's
Blood Alley is frequently attributed to his pranks, especially one in which he reportedly threw the film's transportation manager into
San Francisco Bay. On
September 1,
1948, after a string of successful films for RKO, he and actress
Lila Leeds were arrested for possession of
marijuana. The arrest was the result of a sting operation designed to capture other Hollywood partiers as well, but Mitchum and Leeds did not receive the tip-off. After serving a week at the county jail, Mitchum spent 43 days (February 16 to March 30) at a
Castaic, California,
prison farm, with
Life right there snapping photos of him mopping up in his prison uniform. The arrest became the inspiration for the exploitation film
She Shoulda Said No! (1949), which starred Leeds. The arrest did little to affect Mitchum's career in the long term, but was seen as an embarrassment by his studio, who ordered Mitchum to clean up his act. The conviction was later overturned by the Los Angeles court and District Attorney's office on
January 31,
1951, with the following statement, after it was exposed as a set-up.
"After an exhaustive investigation of the evidence and testimony presented at the trial, the court orders that the verdict of guilty be set aside and that a plea of not guilty be entered and that the information or complaint be dismissed."
Despite troubles with the law and his studio, the films released immediately after his arrest were box-office hits.
Rachel and the Stranger (
1948) featured Mitchum in a supporting role as a mountain man interested in gaining the hand of
Loretta Young, the indentured servant and wife of
William Holden, while the
John Steinbeck adaptation
The Red Pony as a trusted cowhand to a ranching family.
Robert Mitchum returned to true
film noir in
1949's
The Big Steal, pairing Mitchum and Jane Greer once again in an early
Don Siegel film. In
Where Danger Lives (1950) he played a doctor who comes between a mentally unbalanced
Faith Domergue and cuckolded
Claude Rains.
The Racket was a noir remake of the early crime drama
The Racket and featured Mitchum as a police captain fighting corruption in his precinct. The
Josef von Sternberg film
Macao (
1952) saw Mitchum a victim of mistaken identity at an exotic resort casino, playing opposite
Jane Russell.
Otto Preminger's
Angel Face saw the first of three collaborations between Mitchum and
British stage actress
Jean Simmons. In the film, Simmons plays an insane heiress who plans to use young ambulance driver Mitchum to kill for her.