Great films prove their greatness by serving as point of reference to films made decades in the future and in different countries. Sidney Lumet’s *Serpico* did that by inspiring the theme, style and plot of *Leak*, 2000 Dutch crime drama directed by Jean Van De Velde. Script, co-written by Van De Velde and Simon De Wal, is inspired partly *Sans racune*, book by former policeman Jan Van Daleen, and partly by so-calle…