Political intrigues in the Spanish Castilian court during the fifteen century. Doña María is shown as a virtuous widow interested only in her son who becomes concerned when a murder takes place.
| Actor | Role |
|---|---|
 Tina GascóDoña María de Guzmán | Doña María de Guzmán |
 Luis HurtadoDon Álvaro de Luna | Don Álvaro de Luna |
 Adriano DomínguezPríncipe Don Enrique | Príncipe Don Enrique |
 Manuel DicentaAlonso Pérez de Vivero | Alonso Pérez de Vivero |
 Salvador Soler MaríDon Álvaro de Estúniga | Don Álvaro de Estúniga |
 Rafael Romero MarchentPaje Morales | Paje Morales |
 José PradaMarqués de Santillana | Marqués de Santillana |
 Asunción SanchoDama Catalina | Dama Catalina |