Unsurprisingly, The 100's third season finale will be "really dark," according to star Lindsey Morgan. And while characters have been widely spread out all season, the episode will give closure for all the seemingly disparate story lines. "You'll get caught up with everybody. You'll get a lot of ends wrapped up. You'll see a lot of characters you haven't seen for a while," Morgan says. "I think the finale is a really great bookend to the entire journey that everyone has been on since Season 1."