So the crazy twist at the end is that Pastor Malachi Dove was not after Oaksey after all. Infact, he was dead for a good majority of the story. After the massacre on Pig Island, Angeline came back to the house, murdered her father, stuffed him in the drain pipe putting a pig's head (or full body? I can't remember) in the pipe after him, then went back to the community. She was one smart chick because she had this whole thing engineered to a T!
When Oaksey went back to the house with her, she pretended to be scared of the eyes in the pig and asked Oaksey to cover up the pipe. Oaksey took a drum that was near by and shoved it into the pipe. Now his fingerprints are at the scene.
Did Angeline kill Lexi? You bet she did! Oaksey wasn't in the house and Lexi had recently pissed off Angeline. What better time to murder her and make Oaksey think that Dove was out there and had gotten close enough to murder his wife? How did Angeline know that Oaksey was going to return by the route in which would make him look guilty of the murder? I'm not 100% sure on that one. If someone else knows the reason I'd love to hear back.
All Angeline had to do was sit back and bide her time before the police had searched the entire island and found the body of her dead father. Pulling prints off the drum obviously (if you watch a lot of CSI) is something that the police would do. Connect those two facts together and police will probably start remembering other holes in the story.
I read this book about 3 months ago so some of the details are a bit sketchy for me. I would love to hear from others that have read the book with anything else they have to add!