Fory Etterle
engineer Tasca
Grigore Vasiliu-Birlic
Mișu
Ion Lucian
Virgil Sachelarie, professor Olteanu's assistant
George Vraca
professor Dan Olteanu
Graziela Albini
Jules Cazaban
colonel Jack Paleologu
Mircea Constantinescu
professor Cristea
Irina Răchițeanu
Anca Olteanu, Dan's wife