Desc: Muz, ktorý sa nevrátil: Directed by Peter Solan. With Jaroslav Mares, Karol Machata, Viliam Záborsky, Beta Ponicanová. A detective story about the disappearance of important information materials and the mysterious murder of engineer Kovalsky. Police investigate lieutenant Hronec accompanied by an amateur detective, editor Zvara start to the background of the crime.