As a publicity stunt, the studio offered a role to one of then-US President Lyndon B. Johnson's daughters. She declined.
The Lufthansa Boeing 727-30 c/n 18364 D-ABIG used in this film had been involved in a hi-jacking on Oct. 29, 1972, from Beyrouth via Nicosia, Zagreb, bypassing Munich, circling over Nurnberg and returning to Zagreb, releasing the passengers and finally flying to Ankara.
Final film of Rosemarie Frankland.
Frank Wilcox and Eleanor Audley were both veterans of the original "Perry Mason". Wilcox played a judge in eight shows, and Audley played two different characters in two shows.