In The Big Sleep, Philip Marlowe was hired by General Sternwood to get rid of Geiger blackmail. Later Geiger was found killed somehow. After knowing that the case is closed, Philip Marlowe was paid $500.
But Philip Marlowe becomes busy again solving whereabouts of Sean Regan who is later found killed by Eddie.
But how are these two murder cases related?
Why I got doubt is: After the first case is over, Vivian paid money to Philip Marlowe, during that time Philip Marlowe mentions Eddie's name in front of her. She started shaking before him.
Oh, come now, angel, stop shaking.