Various love and crime stories take place in the context of a theater, between tango singers, musicians and dancers.
| Actor | Role |
|---|---|
 Fernando OchoaPablo Rivera | Pablo Rivera |
 Tita MerelloDora | Dora |
 Severo FernándezPonciano | Ponciano |
 Irma CórdobaCelia Rivera | Celia Rivera |
 Enrique SerranoLopecito | Lopecito |
 Aída OlivierMargot | Margot |
| GGuillermo PedemonteEduardo Acosta | Eduardo Acosta |
 Héctor CalcañoDon Pedro | Don Pedro |
 Tito ClimentCadete | Cadete |
 Inés EdmonsonJuanita | Juanita |
 Juan MangianteJefe Investigador | Jefe Investigador |
| JJoaquín PetrocinoNot listed | Not listed |
 Alberto SoiferNot listed | Not listed |
| AAlfonso PisanoHombre en radio | Hombre en radio |
 Vicente ForastieriHombre en tren | Hombre en tren |
 Fernando CamposNot listed | Not listed |