Synopsis by Hal Erickson
Although Marie Windsor plays the title role in Dakota Lil, she is shunted away to third billing, right after male leads George Montgomery and Rod Cameron. Montgomery is cast as a secret service agent Tom Horn, sent West to round up a gang of counterfeiters. He starts by gaining the confidence of dance-hall girl Lil (Windsor), one of the ringleaders. She, in turn, leads Horn to the brains of the operation, Harve Logan (Cameron). When Lil finds out that Horn is a Fed, she's tempted to fill him full of holes; instead, having fallen in love with him, she tries to help him get the goods on Logan. Dakota Lil was based on a story by Frank Gruber, later one of the leading lights of the TV-western craze.
agent [representative], assistance, bad-guy, bank, chorus-girl, counterfeit, cowboy, criminal, federal-agent, fishing-bait, gangster, girl, good-guy, government, group, help, impersonation, justice, lawman, lawyer, love, outlaw [Western], railroad, retrieve, Secret-Service, trapped, undercover