S2E12 · The Monster and the Rocket

Complete story — includes the ending

Errinwright expresses remorse to Avasarala as she departs to Mao's ship with Bobbie and Cotyar. Mao claims he will give both Earth and Mars access to the protomolecule while he sits comfortably in the middle, preventing war. Errinwright meets with Martian Defense Minister Korshunov, poisoning him with a banned toxin for Martians that makes it look as if he died from a heart attack while also ordering the destruction of the Martian black-ops ship MCRN Karakum that was dispatched to collect the protomolecule monster on Ganymede. Errinwright subtly orders Mao to kill Avasarala and tie up loose ends. Holden becomes increasingly aggressive while hunting the protomolecule monster. Naomi and Amos repair the Somnambulist and though it can carry up to 300 people, there is only enough oxygen in the air tanks for 52 people, while over 100 refugees riot at the door. Naomi, with the help of a Belter who gives up his spot to her, manages to evacuate all the children and some young adults. When the Somnambulist is fired upon for violating the MCRN blockade, Alex convinces Holden to save them, threatening the MCRN ships with the Rocinante ' s arsenal. The protomolecule monster is shown to have stowed away aboard the Rocinante.