FRENZY (1972, UK, 116m, 18) **** Thriller dist. Universal Pictures (USA), Universal Pictures / Rank Film Distributors (UK); pr co. Alfred J. Hitchcock Productions; d. Alfred Hitchcock; w. Anthony Shaffer (based on the novel “Goodbye Piccadilly, Farewell Leicester Square” by Arthur La Bern); pr. Alfred Hitchcock (uncredited); ph. Gilbert Taylor (Technicolor | 1.85:1); m. Ron…