Dangerous Crossing or Rail Triangle (German: Gleisdreieck) is a 1937 German crime film directed by Robert A. Stemmle and starring Gustav Fröhlich, Heli Finkenzeller, and Paul Hoffmann.^[1] It is set amongst railway workers and takes its name from Gleisdreieck on the Berlin U-Bahn.^[2] It was partly shot at the Babelsberg Studios in Potsdam. The film's sets were designed by the art directors Carl Böhm [de] and Erich Czerwonski. It was shot on location around Berlin. It premiered at the city's Ufa-Palast am Zoo.

A young railway worker rescues a woman from committing suicide and swiftly falls in love with her. However before long he is drawn into the criminal schemes of her brother, recently released from prison.