Louise Howell
David Sutton
Dean Graham
Carol Graham
Dr. Willard
Chief investigator of drowning
Dr. Ames - Mrs. Smith's psychiatrist
Dr. Sherman - Graham's physician at inquest
Wynn Graham
Walter Sveldon - pianist
Nurse Rosen
Elsie - Graham's maid in DC
District Attorney at inquest
Norris - lake house caretaker
Dr. Craig - Dr. Willard's asst.
Coroner's assistant
Intern
Coroner