Spoiler:OK, but what about the guy his wife is flirting with at the party? In the 'dream'-part he is being killed right before the wife's employer's death, and he is still dead when both detectives examine the photo at the end of the movie, so this episode is not a 'dream'-part. This person is alive at the party, however. So, he has been killed after the party, when the employer was already dead.