A student commits suicide out of unhappy love to a married man; story is recounted in retrospective by a "judge" who asks the audience to decide who is the guilty party.

Marie Tomášová
as Lída Matysová

Vladimír Ráž
as Dr. Petr Petrus

Svatopluk Matyáš
as Milan Stibor

Miloš Nedbal
as Gentleman in a robe

Jarmila Smejkalová
as Dr. Lída Petrusová

Jiřina Šejbalová
as Matysová

Marie Vášová
as Stiborová

Alena Kreuzmannová
as Majka

Felix le Breux
as Tenor

Bedřich Karen
as Dekan