 One of the few films to employ a flashback within a flashback within  a flashback.  This film is often seen as an attempt to recapture the magic of  _Casablanca (1942)_ (qv), to which many key players were also a part  of. Some "usual suspects" include director Michael Curtiz (qv),  stars Humphrey Bogart (qv) and Claude Rains (qv), supporting and  bit players Peter Lorre (I) (qv), Sydney Greenstreet (qv),  Helmut Dantine (qv) and Corinna Mura (qv), writer  Casey Robinson (I) (qv), composer Max Steiner (I) (qv), producer  Hal B. Wallis (qv) and executive producer Jack L. Warner (qv)  (both films were made by the studio Warner Bros.). Also,  Michèle Morgan (qv) was originally cast as Ilsa in  _Casablanca (1942)_ (qv), but her salary demand was too big, so  Ingrid Bergman (I) (qv) was cast instead.