Triángulo

Claudio Brook

as Dr. Pedro Millán

Ana Luisa Peluffo

as Diana Avelar

Norma Lazareno

as Teodora

Jorge Lavat

as Miguel Escontría

Nora Lárraga 'Karla'

as Irene

Gabriel Retes

as Mario

Antonio Raxel

as Inspector Sergio Álvarado

Tito Novaro

as Inspector Ojeda

Eduardo MacGregor

as Doctor Romulo Miranda

Lina Montes

as Directora del Internado

Gloria Morel

as María de la Encarnación

Jorge Fegán

as Psiquiatra Arana

Jorge Casanova

as Abogado de Diana

Lourdes Galindo

Bruno Márquez

Jorge Zamora

as Mesero

Berenice Avila