 Like _Sunset Blvd. (1950)_ (qv), this film started production  without a finished script. Ernest Lehman (qv) worked himself to  exhaustion working on the script with Billy Wilder (qv) during  production. One day, when Lehman did not have an extra copy of a  scene rewrite to give to Humphrey Bogart (qv), Bogart exploded.  Wilder told his crew they would not film another foot of film until  Bogart apologized to Lehman. Bogart invited Lehman to his dressing  room and shooting eventually continued.