S0 E1: Prequel 1: I Am Dr. Rachel Scott

S0 E2: Prequel 2: It May Pre-Date Humankind

S0 E3: Prequel 3: Can You Still Hear Me?

S0 E4: Prequel 4: The Clock Is Ticking

S0 E5: Prequel 5: Avoid Populated Areas

S0 E6: Prequel 6: A Proper Goodbye