On relistening to the departure scene in which the crew leaves Michael, I noticed that Datu gave Michael his journal. Now it seemed like it could be nothing, but do you suppose Datu may have an entry in his journal that could be of interest? Perhaps he had a conversation with Hope in which she said something that sounded mundane, but ended up being quite revealing? She could have had more info regarding the Colony, Shaun, and/or maybe even something interesting regarding Zombies.