Sex in Chains (German: Geschlecht in Fesseln – Die Sexualnot der Strafgefangenen) is a 1928 silent film directed by William Dieterle.

For much of the remainder of the film, the men's sexual frustration from being separated from women is the focus, with scenes such as making nude sculptures from breadcrumbs and water and fighting for a woman's handkerchief smuggled in during visitation.

Meanwhile, Sommer's relationship with fellow inmate Alfred Marquis (Hans Heinrich von Twardowski) begins to move from subtext to foreground.

Sommer takes it, and begins moving into Marquis's bed as the scene fades to an exterior night shot of the prison.

The other man cynically responds that he could make a good deal of money if Sommer is rich, to which Marquis takes offense and walks away.

Though not spelled out, the suggestion is that one could use Paragraph 175 (the German law against homosexual acts) to blackmail Sommer, in the same way that it is used against Paul Körner in Different from the Others.

It is at that point that there is a knock at the door and Helene opens it to find Marquis with a bouquet of flowers come to see Sommer.