Season 4 Episodes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Inhospitable
Needful
Volatile
Involuntary
Tale of Two Sisters
Artemis Through the Looking-Glass
The Lady, or the Tigress?
I Know Why the Caged Cat Sings
Odnu!
Nomed Esir!
Teg Ydaer!
Og Htrof Dna Reuqnoc!
Kaerb Ym Traeh!
Nautical Twilight
Ebb Tide
Emergency Dive
Leviathan Wakes
Beyond the Grip of the Gods!
Encounter Upon the Razor's Edge!
Forbidden Secrets of Civilizations Past!
Odyssey of Death!
Rescue and Search
Ego and Superego
Zenith and Abyss
Over and Out
Death and Rebirth