 There was a fourth ending shot, but subsequently dropped from the film due to  the fact that director Lynn did not like or approve of it. It had Wadsworth  as the solo killer of the bunch, explaining that he killed everyone out of  the need for perfection in the world, that all of lifes consistencies were  not good enough, and further tells the six victims that he has poisoned the  champaign he served and unless they find an antidote in three hours, theyll  die. Police show up soon enough and trap Wadsworth, but not for long. He gets  away from J. Edgar Hoover and leaves, locking all the people in the mansion.  But as he steals a police car, he notices a smell (the dog dropping smell  from the beginning of the film) and realizes the Doberman from earlier is now  in the police car, and it lunges for him. The police car crashes, and  Wadsworth is dead. This implies that the others got out okay now that the  windows were not guarded by the Doberman any longer.