- Arc Number: Once again 100 is brought up again this time in reference to the fact that, without a hydro generator to supply them with water, no more then 100 people will be able to survive on Alpha Station for five years.
- Contrived Coincidence: The leader of the Azgeda bandits that has taken over Farm Station also happens to be the one who killed Monty's father.
- Honour Before Reason: Despite being informed in advance that the ambassador of Trishanakru intends to challenge him to Trial by Combat Roan decides to go through with the challenge despite still being injured. Although as he points out his people aren't going to stand behind a king that hides behind soldiers instead of fighting his own battles.
- Make It Look Like an Accident: Once it becomes apparent that the Trishanakru ambassador has no intention of backing down from his attempted Coup Octavia comes into his tent at night and stabs him in the ear with an ice pick in order to make it seem like he died from a heart attack.
- Metaphorically True: Clarke tells the assembled people of Skaikru about the threat of Praimfaya and that Alpha Station needs to be fixed in order for them to survive. Althogh she lies when she says that everyone can survive as long as they help Raven, since without a hydro generator, they can only produce enough water for 100 people for five years. Raven is not amused.
- Sadistic Choice: Bellamy's group have a choice of either turning the hydro generator into a bomb in order to kill the Azgeda soldiers guarding Farm Station or leaving with the device and potentially losing the members of Farm Station that are being used as slaves. Bellamy ultimately decides to save the members of farm station.
- Title Drop: The title comes from Jaha who says the phrase word-for-word after he realises that Clarke is hiding something from the rest of her people.
- You Killed My Father: A Trishanakru man named Ilian blames Skaikru for the death of his family whilst he was under the influence of the City of Light.
Recap / The 100 S 04 E 02