"Everybody Comes to Rick's" is an American play that was bought unproduced by Warner Brothers for a record figure of $20,000 (equivalent to $294,000 in 2020).
It was adapted for film as CASABLANCA (1942), starring Humphrey Bogart and Ingrid Bergman.
Written by Murray Burnett and Joan Alison in 1940, prior to the United States' entry into World War II, the play was anti-Nazi and pro-French Resistance. The film became an American classic, highly successful and ranked by many as the greatest film ever made.
en.wikipedia.org/wiki/Everybody_Comes_to_Rick%27s