"Amy entombs Michael alive in the dungeon and takes control of the abbey. The Coast Guard arrives to evacuate the CDC team to a neighboring island with an outbreak, but they stay to investigate a red resin that is prolonging the life of the infected. Sarah tells Kyle that she is immortal, and to prove it she eats some of the tainted honey. Amy reveals to Sarah that the baby is being kept alive in a tank, and offers to exchange it for the secret of immortality. In the future, Julia frees Michael and asks him to help find the baby, whose stem cells may hold the key to a cure. Michael tries to kill her, but is beheaded by Caleb with "Densho"."
So the Coast Guard broad keeps wanting to pull them away from the island... which makes no sense given that that is where the disease started and where the mostly like cure is to be found. Amy entombs her father, Michael, alive which is pretty good punishment for an immortal. Didn't really see the whole point of having him freed thirty years in the future just to be killed two minutes later though.
Sarah's fetus is being kept alive in some sort of artificial womb... which seems really weird since that is technology so advanced it doesn't actually exist today, yet all the other tech we've seen on the island has either been non-existent or thirty+ years old. No doubt in my mind that Sarahs baby is actual Caleb in the future. Somehow he ends up being the only survivor, probably because he's immortal. Although, if Caleb is the immortal baby, then he is different than the other immortals. None of the other immortals age after they become immortal, take the 500 year old "12 year old" french girl for example. If he'd followed that pattern he'd be a thirty year old fetus in jar still. Must have something to do with him being an unborn fetus when his Mom was made immortal. Maybe he's only partially immortal, or maybe he is an immortal who ages because he was in a state of development already inside the womb.
