Even Alfred Hitchcock , whose own films inspired the genre , was influenced by the '' giallo '' in his later career as evidenced by his penultimate film , '' Frenzy '' ( 1972 ) .
Even Alfred Hitchcock , whose own films inspired the genre , was influenced by the '' giallo '' in his later career . 
 This was no more evident than with his penultimate film , '' Frenzy '' ( 1972 ) .