Continuity mistake: In season 3 episode 16 Jasper was shot in his left leg. In this episode he has his right leg bandaged.
Factual error: When Octavia goes to challenge Raphael and instead kills him, she does so using a very long skewer she grabs from the table. If she had actually put that through his head, it would've either stuck out from The Other Side or not gone in completely. (00:34:30)
Plot hole: In s04e06 Clarke, Roan and Bellamy are chasing the Azgeda that stole the vehicle with the barrels, killing them all in the process. That leaves 3 drivers for 2 vehicles. S04e07 kicks off with both the rover and the yellow truck re-entering the camp. However, in later shots we see that both Roan and Clarke are at the island and only Bellamy drove home. If so, who drove the yellow truck back home since no other character returned from the island? (00:01:45)
Suggested correction: Different truck. The goal of the mission was to get the fuel (on the yellow truck) to Abby. Early in episode 7 as Clarke and Abby are talking, Clarke mentions that Roan is unloading the fuel. Meaning they still delivered the yellow truck to Abby as intended (minus the empty barrel). So it could not be back at the camp with Bellamy.
Character mistake: Bellamy calls Monty "Murphy" when they get back to the Arc and he is losing oxygen.