Il Sorriso della Iena - Jakob

Marco (Silvano Tranquilli), a bankrupt nobleman, is unhappily married to the wealthy Dorothy Emerson (Zora Gheorgieva). Her best friend Gianna (Rosalba Neri) is his mistress. Marco murders his wife and becomes administrator of the estate until Nancy, Dorothy's daughter (Jenny Tamburi) from a previous marriage, turns twenty. Giana tries to encourage Marco to kill Nancy, as Marco's standard of living will plummet once she
takes over the estate. But Marco ends up falling in love with Nancy, which complicates the proceedings...