They find a video camera on the boat, and it's got old footage of the shipowner's antics (flashing breasts, carousing, etc.) They use the camera to document their trip to the new island ... several flashes along the way of another boat they find (with a zombie head inexplicably in a cooler snarling at them, plates of maggots, etc.) and their boat runs out of gas. As they drift to the new island, they find it initially deserted, but are inundated with zombies as soon as they dock. There's some debate as to what's actually seen, but I think I saw Ken's character (wielding a shotgun) running into the woods, and the camera is dropped, so whoever was manning it presumably was killed or fled in panic. Some have said that they saw Ken's body, or Ana as a zombie, but it was all so fast that I honestly can't say that I saw either.

After the credits it shows an autistic boy looking at a snowglobe of the mall. He'd imagined the whole thing...

Ving Rhames' character wakes up and realizes he's being raped by some sheriff in a basement and is actually happy! It was all a dream...