Background: Born in Cherryvale, Kansas, Louise Brooks was the daughter of Leonard Porter Brooks, a lawyer, who was usually too busy with his practice to discipline his children, and Myra Rude, an artistic mother who determined that any "squalling brats she produced could take care of themselves". Rude was a talented pianist who played the latest Debussy and Ravel for her children, inspiring them with a love of books and music. When she was nine years old, a neighborhood predator sexually abused Louise. This event had a major influence on Brooks' life and career, causing her to say in later years that she was incapable of real love, and that this man "must have had a great deal to do with forming my attitude toward sexual pleasure....
Context: Brooks made her screen debut in the silent The Street of Forgotten Men, in an uncredited role in 1925. Soon, however, she was playing the female lead in a number of silent light comedies and flapper films over the next few years, starring with Adolphe Menjou and W. C. Fields, among others.  She was noticed in Europe for her pivotal vamp role in the Howard Hawks directed silent "buddy film", A Girl in Every Port in 1928.  In an early sound film drama, Beggars of Life (1928), Brooks played an abused country girl who kills her foster father in a moment of desperation. A hobo, Richard Arlen, happens on the murder scene and convinces Brooks to disguise herself as a young boy and escape the law by "riding the rails" with him. In a hobo encampment, or "jungle," they meet another hobo, Wallace Beery. Brooks's disguise is soon uncovered and she finds herself the only female in a world of brutal, sex-hungry men. Much of this film was shot on location, and the boom microphone was invented for this film by the director William Wellman, who needed it for one of the first experimental talking scenes in the movies.  By this time in her life, she was mixing with the rich and famous, and was a regular guest of William Randolph Hearst and his mistress, Marion Davies, at San Simeon, being close friends with Davies' niece, Pepi Lederer. Her distinctive bob haircut helped start a trend; many women styled their hair in imitation of her and fellow film star Colleen Moore. Soon after the film Beggars Of Life was made, Brooks, who loathed the Hollywood "scene", refused to stay on at Paramount after being denied a promised raise, and left for Europe to make films for G. W. Pabst, the prominent Austrian Expressionist director.  Paramount attempted to use the coming of sound films to pressure the actress, but she called the studio's bluff. It was not until 30 years later that this rebellious move would come to be seen as arguably the most savvy of her career, securing her immortality as a silent film legend and independent spirit. Unfortunately, while her initial snubbing of Paramount alone would not have finished her in Hollywood altogether, her refusal after returning from Germany to come back to Paramount for sound retakes of The Canary Murder Case (1929) irrevocably placed her on an unofficial blacklist. Actress Margaret Livingston was hired to dub Brooks's voice for the film, as the studio claimed that Brooks' voice was unsuitable for sound pictures.
Question: When did she stop starring in films?. Whats the answer?
1929