OK so from the episode 'GOING UNDER' we finally get a hint of what tombstone 2 is all about and from that im guessin that the real buyer is Micheal and Lincs mother. Remember when micheal was 1st diagnosed the docs said that what he had was very rare, and as we know already lincoln revealed that thier mom had the same condition. I realised the connection when sara asked the general whether any1 had survived the brain surgery that micheal was having to which he replied that the person lived a very long life. my suspicions were further more confirmed when lincoln revealed that their mum worked for the company.
So it's pretty safe to say that the few remainig parts of the season will be concentrated around the bros mom and what her agenda is and retaining scylla. i'm guessin that shes probably gettin revenge for what the company did to her husband/ family etc. who knows but what a shock it will be when they findout shes alive.
btw. the look on micheals face when he woke up after flatlining was hilarious...i love wentworth miller the 3rd (lol i love his name) but that was some shiteous unemotinal acting..looool
loved the scenes with micheal and westmoreland..nice to see that the writers exploring micheals intelligence again.