Continuity mistake: When going to retrieve Murphy from the dropship, after Bellamy subdues his sister, his gag is covering his mouth. Then, as Pike moves towards him, suddenly it's magically not. (00:22:20)
Continuity mistake: Toward the end John Murphy gets a collar around his neck. In subsequent shots the lock on the collar is alternately locked / open. (00:34:00 - 00:35:00)
Continuity mistake: During the funeral on the oil rig, right after Octavia collapses under the effect of the drug, Clarke has a sturdy, simple metal cup in her hand, but in the following shot we see her dropping a completely different, clay-like and more elaborate cup that shatters when it hits the floor. (00:39:40)
Continuity mistake: In season 3 episode 16 Jasper was shot in his left leg. In this episode he has his right leg bandaged.
Continuity mistake: When Clark walks into the hall full of dead grounders and it shows her looking at them. A guy on the right moves his head slightly as if getting comfortable. (00:18:50)
