 Directed by Giuliana Berlinguer from a teleplay by Margherita Cattaneo, "Circuito chiuso" aired March 7, 1969.The series of black-and-white telemovies stars Tino Buazzelli (Nero Wolfe), Paolo Ferrari (Archie Goodwin), Pupo De Luca (Fritz Brenner), Renzo Palmer (Inspector Cramer), and Mario Righetti (Orrie Cather).Other members of the cast of "Circuito chiuso" include Mario Pisu (Otis Jarrell), Marzia Ubaldi (Trella Jarrell), Romina Power (Lois Jarrell), Umberto D'Orsi (Roger Foote), Pier Luigi Zollo (Wyman Jarrell), Barbara Valmorin (Nora Kent), Luciano Tacconi (Corey Brigham), Laura Tavanti (Susan Jarrell) and Germano Longo (Jim Eber).