The Lone Ranger (1949)

S2E17 Letter of the Law

Jeff Niles, married under a false identity to the daughter of a ruthless sheriff, finds himself in a precarious situation when escaped convict Sam Slater blackmails him. Slater demands information about the bank where Niles is employed, leveraging a secret from their past—Niles unknowingly assisted in a robbery during his childhood, which now threatens to unravel his life.