1. Sanctum
Aired May 1, 2019 · 42 minutes
Still reeling after receiving Monty’s message, a small group goes down to explore the mysterious new planet. Back on the Mothership, several members of Wonkru face the consequences of their decisions.
2. Red Sun Rising
Aired May 8, 2019 · 42 minutes
The team on the ground flights to survive the threat they face on the new planet. Meanwhile, Raven must join forces with an unlikely ally to save everyone on board the Mothership.
3. The Children of Gabriel
Aired May 15, 2019 · 42 minutes
Clarke tries to win over the leaders of Sanctum in order to let her people stay. Meanwhile, Bellamy, Echo and Octavia discover a new threat while on a mission to retrieve the transport ship.
4. The Face Behind the Glass
Aired May 22, 2019 · 42 minutes
Clarke embraces the traditions of Sanctum and tries to make amends for her past actions.
5. The Gospel of Josephine
Aired May 29, 2019 · 40 minutes
Jordan investigates Sanctum. Meanwhile, Octavia and Diyoza discover the threats of the new planet firsthand. Lastly, Bellamy and Clarke butt heads.
6. Memento Mori
Aired Jun 12, 2019 · 42 minutes
Diyoza learns more about the mysterious Children of Gabriel while Abby continues searching for a way to save Kane.
7. Nevermind
Aired Jun 19, 2019 · 42 minutes
Clarke’s past catches up to her.
8. The Old Man and the Anomaly
Aired Jun 26, 2019 · 41 minutes
Octavia and Diyoza make their way to the mysterious anomaly in search of the Old Man. Meanwhile, Murphy has an offer for Emori.
9. What You Take With You
Aired Jul 10, 2019 · 42 minutes
Bellamy must venture into enemy territory with an unlikely companion. Meanwhile, Octavia is forced to confront her past.
10. Matryoshka
Aired Jul 17, 2019 · 42 minutes
Russell seeks justice. Meanwhile, Gabriel must make a difficult choice. Lastly, the Blake siblings reunite.
11. Ashes to Ashes
Aired Jul 24, 2019 · 42 minutes
Bellamy and Octavia must work together to save their friends. Echo is forced to face her past.
12. Adjustment Protocol
Aired Jul 31, 2019 · 42 minutes
A special Naming Day changes everything in Sanctum. Gabriel comes face to face with an old friend.
13. The Blood of Sanctum
Aired Aug 7, 2019 · 42 minutes
Sanctum becomes a battleground between the devout and the non-believers. The mystery of the anomaly deepens.