Conversation so far:
How did Sylar lose his memory?
When healed, Sylar emerges from the ground in his own body, suffering from amnesia.
Did Sylar lose all his memory or just some?
Samuel notices that Sylar's memories are not his. In an effort to awaken Sylar's true personality, Sylar is taken by Damien to the hall of mirrors.

Question: Does he ever regain his memory?
Self-contained rewrite: Does Sylar ever regain his memory?