Dr Jeffrey MacDonald: Husband/Father and Prime Suspect
Colette MacDonald: wife of Jeffrey MacDonald (victim)
Kimberly & Kristen: MacDonald’s children (victims)
Freddy Kassab: Jeffrey’s father-in-law
Officer Kenneth Mica and Lieutenant Joesph Paulk: Police who arrived at crime scene
Bernie Segal: Defence Attorney for MacDonald
Colonel. Warren V. Rock: The main Army investigator
Attorney James Blackburn: Lead prosecutor
Helena Stoeckley: ‘Floppy Hat’ female suspect
Dr James Brussel: Celebrity psychiatrist
Judge Franklin T. Dupree Jr: Presided over case
Joe McGinnis - published 'Fatal Vision' book on the case.