We get some answers!
Well, sort of.
Yes, Sophia has been in on this, and Taylor wrangled her in.

Credit: NBC/Barbara Nitke
Lets get to the details.
As soon as Jane sees Sophia, her memories are instantly triggered.
Sophias conscience must be beyond repair.
Oscar also refers to Mayfairs arrest as Phase 1, which means theres a lot more conspiracy to come.
What else is planned?
Back at the FBI HQ, Weller is playing interim director while Mayfairs investigation continues.
He visits her at her home while shes on house arrest and tells her that hes not giving up.
Because there arent any leads currently, Weller decides to continue to work cases until something pops up.
I must say, this seems like a smart move on the FBIs part.
Carter surely couldnt have been the only other person that knew about the Jane Doe file and paid attention.
She heads to the child services office and finds sketchy suspects breaking through security.
After an elevator shake-down and shootout, one of the suspects escapes with the mystery baby.
Meanwhile, Patterson discovers that the babys DNA also matches Bryces wife, making things even more confusing.
Imagine marinating on that news on a Monday.
She finds the lab and sees its filled with several babies.
Peter and the woman who took the small child walk in, and she starts to take them out.
The writers are really pushing the Weller-Jane connection, and its all about to come crashing down.
Meanwhile, Mayfair is trying to piece together how all of this came crashing down on her.
Remember when she had her friend Marcus White look into the blurred photo a man driving a car?
Marcus colleague in Denmark came through, and he shipped the photo to Mayfair.
Clear as day, Oscar is shown in the enhanced photograph.
He confirms that Donna met with Sophia by showing him a photo.
Mayfair remembers a particular shop that Sophia would get her French cigarettes from and pays it a visit.
After paying $100 for a tip, Mayfair gets a number that she trusts Reade to investigate.
Her investigation leads her to what feels like an underground lair…where she runs into Jane!
There isnt another phrase that could haunt Jane more.
I wish I could say that was the biggest bomb dropped in this episode, but theres more.
All seems great with the shows main ship, so we know something is about to go down.
Weller gets a call that his dad is on his last breaths, and he heads to the hospital.
When he arrives, his dad is blabbering while slowing drifting away.
He tells Weller, It wasnt her…
It wasnt her… Shes still there, under the fort… Im sorry…
I did my best… Shes under the fort…
Uh, excuse me?!
Confirming our suspicions, Wellers pops admits to killing Taylor before taking his last breath.
So, if the real Taylor Shaw is underneath a childhood fort, then who the hell is Jane?