How Did Murray Burnett Die?

Everybody Comes to Rick's is an American play that was bought unproduced by Warner Brothers for a record figure of $20,000. 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 one of the greatest films ever made.