A crime thriller w/a hint of sardonic humor from 1950 starring Claire Trevor & Fred MacMurray. Trevor is a police officer (who is proficient in Spanish) who's just been assigned to a high profile case of drug smuggling south of the border where she will infiltrate the drug peddlers crew, run by Raymond Burr, as a dancer at a club but her aim is set on the trafficker, played by MacMurray. What Trevor doesn't know is that MacMurray works for the government (w/ties to the Mexican police) who's out to get Burr as well but when Trevor comes into their orbit & even though he starting to fall for her, he has to do his duty so at the end of all this, she has to go down so as they undergo a series of misadventures (one humorously w/them catching a plane from Mexico to California) the ever present question mark over the heads (will they each come clean to each other before something goes wrong?) lingers right until the very end. Both leads are wonderful w/each contributing equally where need be (particularly Trevor's linguistic prowess) except at the very end where the he-man, macho lead has to make the final arrest (& a gunfight ensues) where the ball is not so much dropped but misplaced.