The main heroes are brought together in an attempt to save Bacall 's younger sister Vickers .
Based on Raymond Chandler 's First Detective Marlowe novel , The Big Sleep 1946 with Humphrey Bogart and Lauren Bacall , demonstrates the two romantic thriller elements of adventure and dual worlds .
The main heroes are brought together in an attempt to save Lauren Bacall 's younger sister Vickers .
Based on Raymond Chandler 's First Detective Marlowe novel , The Big Sleep 1946 with Humphrey Bogart and Lauren Bacall , demonstrates the two romantic thriller elements of adventure and dual worlds .