This episode's headline: Mondale's Strategy: James Johnson; Talks Cancelled: East and West Germany; Heroin: Painkiller Debate; Pearl Cass: New Vision. The guests include In Washington: JAMES JOHNSON, Mondale Campaign Chairman; STEPHEN SZABO, German Expert; Dr. ALLEN MONDZAC, Cancer Specialist; Dr. EDWARD BRANDT, Department of Health and Human Services. Byline: In New York: ROBERT MacNEIL, Executive Editor; In Washington: JIM LEHRER, Associate Editor; JUDY WOODRUFF, Correspondent; Reports from NewsHour Correspondents: MICHAEL BURKE (BBC), in Sharpeville, South Africa; EDWARD GIRARDET, in Berlin; BILL COY (WSOC), in Charlotte, North Carolina