Tamara Kotrbová
— Markéta
Eva Jenisová
— Markéta (singing voice)
Zdeněk Hruška
— Adam
Ľudovít Ludha
— Adam (singing voice)
Jiří Bartoška
— Richard – Mefisto
Luděk Vele
— Richard – Mefisto (singing voice)
Růžena Merunková
— Mother
Jiřina Přívratská
— Mother (singing voice) / Teacher (singing voice)
Jan Teplý
— Father
Ivan Kusnjer
— Father (singing voice) / Old Doctor (singing voice)
Luba Skořepová
— Grandma
Jarmila Svobodová
— Grandma (singing voice) / Teacher (singing voice)
Nina Divíšková
— Teacher
Kateřina Frýbová
— Teacher
Alena Karešová
— Teacher
Věra Koktová
— Teacher
Jaroslava Kretschmerová
— Teacher
Zora Polanová
— Teacher
Dana Syslová
— Teacher
Eva Dědková
— Teacher (singing voice)
Dalimil Klapka
— Old Doctor
Ivan Trojan
— Medic
Hana Killnarová
— Addict
Pavel Zvarič
— Doorman
František Vláčil
— (uncredited)