There's a bug (that seems to lead the game into a dead end): After talking to Dr. Blackter (brace doesn't matter) I go back to the Paris map. Now, if I directly go to Nico's apartment the chapter (after coming back from England, the pub/chemists') gets reset. With that I mean the splash screen shows up (meanwhile in Nico's apartment...) when entering the house, Nico's back in her apartment, starts talking all over again (her uncle, the Templars etc.) and on the map all links are reset to the state they were after that sequence with Nico was originally finished (airport links shows up etc.).
That means I can go back to England again and, which is really weird, walk to that house where Khan and George were imprisoned... AS GEORGE. Watching myself looking through that window... pretty scary that was! :p
Anyone else experienced this bug? Guess it has been released earlier in the game, if you need more details I'll try to think back... you can also have savegames, got some.
Sorry dudes I know how hard you worked on this and now we still come up with more things that want to be addressed. But... just trying to help you make it perfect :)
Cheers ~