But don't worry, he will be back.

"When he comes back...certainly everybody's looking for him, everybody's desperate to find him, and that journey will unfold over a number of episodes, but how

But don't worry, he will be back.

"When he comes back...certainly everybody's looking for him, everybody's desperate to find him, and that journey will unfold over a number of episodes, but how many I won't tell you guys."

If Bellamy is in the anomaly, which is now also where Gabriel, Echo, and Hope are, it's possible that he could be missing for years on his end, but only a few hours as far as Clarke (and others) are concerned. But Clarke definitely will realize that Bellamy and the others have gone missing before too much time has passed.

"In the premiere, we know that Echo, Gabriel, and Hope are pursuing to try and stop the people that have him, and back in Sanctum they don't know that this is going on yet, but there will come a moment when all the stories connect, not very very long into the season by the way. And that's when the real mission into the great unknown begins," Rothenberg says.