David Stillwell's (Gregory Peck) memory suddenly becomes mixed up starting from the moment the building he is in has a power blackout. He is bewildered that he can't recall even simple particulars of his job and places he does remember don't exist. Believing he has some type of amnesia, he tries to backtrack what happened before the blackout. Aided by a rookie detective and confused by an old girl friend, he tries to make sense of inconsistent facts while people around him are being murdered.

David Stillwell's Office, 2 Broadway and Stone Street, Manhattan.

Broadway (btw Morris Street and Rector Street) Manhattan.

Central Park Zoo, Central Park, Manhattan.

Central Park West and Columbus Circle, Manhattan.

otsoNY Comments: The shop which Gregory Peck walks towards is no longer there and has been replaced by the Trump International Hotel.

Central Park West and Columbus Circle, Manhattan.

Battery Park, Manhattan.

Central Park Driveway and Columbus Circle, Manhattan.

Pine Bank Arch, Central Park, Manhattan.

Inscope Arch (South East Corner) Central Park, Manhattan.

5th Avenue (btw East 67th and 68th Streets) Manhattan.

Mott Street and Grand Street, Manhattan.

150 Mott Street and Grand Street, Manhattan.