Lately I've been getting into the Nazi Zombies storyline and trying to predict what may happen next. I am ging to share information with you and hopefully you guys can share ideas to try to piece together the clues.

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In Black Ops 1 on the zombie map Moon, Nikolai mentions Weasel. After completing the easter egg (the 2nd half) Nikolai shouts, "Good, now let's go help Weasel."
In Black Ops 2 on the zombie map Mob of the Dead, Weasel mentions Nikolai. At random points of the game, Weasel will say, "Nikolai, Nikolai, Nikolai, Nikolai! Why do I keep hearing that name?"

We know from the past from Samuel and from Richtofen that voices could be heard. Richtofen was able to hear Samantha and we're not too sure who Samuel is able to hear yet. However, Weasel says he's "hearing" the name Nikolai, not remembering it. Could it be the same voice that Samuel is hearing, or could it be Samantha, Maxis or Richtofen?
Leave your ideas in the comments!!

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Next, Samantha's Lullaby is heard three times throughout all zombies maps so far. The first time was the loading screen of moon. Next was the song played on Nuketown after finding all 3 teddy bears. Now, in Mob of the Dead, if you spawn, don't move anything, and die, Samantha's Lullaby is played.
How do you think this is all being tied together? Will we be returning to the moon? Leave your thoughts on this in your comments as well. Thanks, and it means a lot.