 Psychotherapist Dr. David Craig videotapes his patients  sessions. Patient Peter Heywood reveals an affair on one of the tapes. Heywood s wife Barbara goes through mobster Ronnie Fowler to buy a copy of the tape from Mark Douglas, brother of Dr. Craig s nurse Edith. After his office is ransacked, Dr. Craig consults with Perry Mason. Mark Douglas is killed, and everyone has a motive, but Dr. Craig is charged with murder.