More from a Telegraph article on Tracy's toxic behavior:
[quote]Famous actresses the Oscar-winner bedded included Myrna Loy, Paulette Goddard, Hedy Lamarr, Loretta Young, Bette Davis, Gene Tierney, Joan Bennett, Olivia de Havilland, her sister Joan Fontaine and Joan Crawford. Mankiewicz seemed to take a vicarious pleasure in Tracy’s conquests, boasting that “nobody at MGM gets more sex than Spencer Tracy”. Tracy was also infatuated with the “innocent-looking” Ingrid Bergman. In 1940, he threatened to quit a role in Dr. Jekyll and Mr. Hyde if Metro-Goldwyn-Mayer picked Lana Turner to play his love interest ahead of the 26-year-old Swedish beauty. Despite the fact that she was married, and had an infant daughter, he managed to seduce Bergman. The bosses at MGM artfully projected a public image of Tracy, by then 40, as the young starlet’s mentor. The studio had the pair photographed drinking milkshakes at a Beverly Hills ice cream parlour. Their fling was short-lived and Tracy soon embarked on the love affair of his life, with Katherine Hepburn.
[quote]Even a passionate affair with a famous actress such as Hepburn was not enough to satisfy his appetites, though. Irene Dunne, who starred with Tracy in the 1943 film A Guy Named Joe, recalled that she found him “rude and brusque”, and later admitted that he made a pass at her, without going into details. Film historian Alan Royle, author of Hollywood Warts ‘N’ All, said that during rehearsals for A Guy Named Joe, Tracy would whisper graphic details in Dunne’s ear about what the lurid things he would do to her if he ever got her alone. Dunne, who went on to fight for female contract rights in Hollywood, complained to MGM co-founder Louis B. Mayer about the harassment. Mayer visited the set and warned Tracy to leave her alone.
[quote]The most damning allegation about Tracy, though, concerns his predatory behaviour to the child star Judy Garland. In 1935, the 36-year-old visited the 13-year-old prodigy, who had just signed for MGM, on the set of a short film called La Fiesta de Santa Barbara. His behaviour seems like classic grooming. Tracy then “began sleeping with Garland when she was just 14,” according to E.J. Fleming, author of The Fixers: Eddie Mannix, Howard Strickling and the MGM Publicity Machine.
[quote]The allegations have been repeated elsewhere. A. Lertzman and William J. Birnes, authors of The Life and Times of Mickey Rooney, said that Rooney – who starred with Tracy in Boys Town – admitted to them that Garland confirmed that she slept with Tracy as a young teenager. “Mickey said everyone on the inside knew what Tracy was like. The public had no idea,” they wrote on a film blog.
[quote]He owed the bosses of the MGM publicity machine for making sure that his shameful behaviour was hushed up. They turned a blind eye to the fact that he continued sleeping with Garland for the next three years. “Eddie Mannix and Howard Strickling both knew the vile secret,” added Fleming. Mannix, a former bouncer and construction worker with mob connections, carried out Strickling’s orders to keep Tracy’s criminal behaviour out of the newspapers.