Originally Posted by Jeremy W
Or perhaps it's because they restored his mind using the parts that made him cold and sane.
That's what I thought. The serum reconnected all his damaged neural pathways and now it's back to cold, calculating Walter. Well at least we know the answer to the brain discussion now.
Another inventive and uncompromising episode. The Bell reveal was a surprise but the last minute twist was telegraphed very early. I think I saw that coming about five minutes in when everyone just kept calling her "agent" while the rest of the characters were addressed and introducing themselves with full names.
So it appears as if Peter and Olivia's offspring was the reason they wanted Peter wiped from existence. She is the key to their defeat. I'm going to assume from the bullet that Olivia is dead. Maybe Bell sold her out to the Observers or used her cortexiphan enhancement as an integral part of something that got her killed.
Also have to wonder what happened to the bridge. Did Jones succeed in merging the worlds or at least closing the Redverse off? Was his big plan to prepare the way for The Observers to arrive in force?