Private detective Franchot Tone is hired by a prominent politician (Tom Powers) to run a background check on the politician's wife (Lynn Merrick). Meanwhile, another client (Janet Blair) engages Tone to locate her missing sister-in-law. The two assignments merge into one before long, and Tone is up to his ears in the trouble he claims to love in the film's title. Like most movie private eyes, Tone attracts women like a magnet: In addition to the aforementioned Lynn Merrick and Janet Blair, the cast includes Glenda Farrell (as the p.i.'s faithful secretary), Janis Carter and Adele Jergens. I Love Trouble was based on The Double Take, a novel by Roy Higgins. ~ Hal Erickson, All Movie Guide
A wealthy man, Ralph Johnston, hires detective Stuart Bailey to investigate his wife's background. Baily discovers that the wife had been a dancer under her maiden name of Jane Breeger and had left her home town with actor Buster Buffin. Buffin tells that Jane changed her name to Janie Joy and enrolled in UCLA. He promised more information but is killed before Bailey can question him further. With the help of a showgirl Bailey learns that the wife had used stolen papers from a girlfriend to enter college after she stole $40,000 from the club where she worked. The detective eventually learns that the Johnston had killed his wife when he had himself discovered her past, in order to avoid a scandal, and that he had hired the detective in order to frame him for the killing