The story of father and son detectives takes place mostly in the dignified surroundings of a concert hall. Who prepared the assassination, timed exactly according to the score of a piece by Joseph Haydn, what fate will befall the famous conductor Castellani, what surprising methods will the pair of detectives use?
Cast

Miloš Kopecký
Unknown

Boris Hybner
Unknown

Milena Dvorská
Unknown

Ladislava Kozderková
Unknown

Jiří Kodet
Unknown

Julie Jurištová
Unknown

Ladislav Křiváček
Unknown

Jan Přeučil
Unknown

Bronislav Poloczek
Unknown

Roman Hemala
Unknown
Jana Viščaková
Unknown
Jiří Cimický
Unknown
Oskar Gottlieb
Unknown
Jindřich Bonaventura
Unknown

Vilém Pruner
Unknown
Miloslav Štibich
Unknown

Miloslav Homola
Unknown
Vladimír Pospíšil
Unknown
Zdeněk Blažek
Unknown
Václav Kotva
Unknown
Adolf Kohuth
Unknown
Daniela Vacková
Unknown
Crew
Eduard Verner
Dramaturgy
Jan Bonaventura
Director

Boris Hybner
Screenplay, Story
Jaroslav Dietl
Screenplay, Story
Dalibor Lipský
Editor
Jan Osten
Director of Photography
Miloš Zábranský
First Assistant Director

Karel Černý
Production Design
Ladislav Chroust
Assistant Camera
Šárka Váchová
Costume Design
Jaroslava Adámková
Costumer
Milan Novák
Makeup & Hair
Miloslav Hůrka
Sound

Petr Skoumal
Original Music Composer
Miloslav Dvořák
Set Decoration
Jarmila Čajová
Script Supervisor
Miroslav Smrček
Production Manager
Ivan Hecl
Unit Manager
Olga Zelenská
Unit Manager
Mario Klemens
Conductor