Dr. Banner (Bill Bixby) and his superhuman alter ego (Lou Ferrigno) are imperiled by enemy agents. Jasmin: Elizabeth Gracen. Dr. Pratt: Philip Sterling. Amy: Barbara Tarbuck. Kasha: Andreas Katsulas. Bella: Anna Katerina. Zed: John Novak. Betty: Chilton Crane. Bixby also directed this sequel to the series (1978-82).