- HD 1080
- Runtime: 88m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: William A. Seiter
- Stars: Fred MacMurray, Claire Trevor, Raymond Burr, José Torvay, Morris Ankrum
- keywords: drug smuggling, film noir
- Production_studio: Borderline Productions Corp., Universal Pictures, Milton H. Bren and William A. Seiter Productions
- Slogan: Two Undercover Agents Unwittingly Stalk the Same Target.
- providers: Amazon Prime Video, fuboTV, Epix Amazon Channel, MGM Plus Roku Premium Channel, MGM Plus, Cultpix, Amazon Prime Video with Ads
- The Borderline is featured in the top rankings of 1950
- #99 in Top Drama Movies of 1950
- #66 in Top Crime Movies of 1950
- #38 in Top Thriller Movies of 1950
The Los Angeles police know that Pete Ritchie has been bringing drugs into the city, but they can't pin a single piece of evidence on him. After many botched attempts to get at the crook, they resort to having cop Madeleine go undercover and seduce her way into Ritchie's circle. Before she can get anywhere, she's abducted by Johnny, a government agent posing as a thug. But Johnny and Madeleine have no idea they're on the same side of the law.