"I agree. I think Dereck may have been programmed by Skynet during his imprisonment at the mansion (otherwise, why let everyone go unharmed--or why that specific group of soldiers?). If he was brainwashed, that may explain why he killed Andy Goode but claimed he didn't do it and thought Sarah was responsible until he learned otherwise.

I'll admit that killing Andy Goode makes little sense given that he is one of ten people who create Skynet if the AI was ultimately responsible. However, since Sarah had made contact with and friended Andy, and Dereck knew that, perhaps the intent was to terminate Andy since he could crack Skynet (like the Termination of everyone at CRS including General Brewster in T3, because they had the knowledge to stop it).

Another thing that I've thought about is that maybe there's a message in this; you shouldn't give your trust to people based on their origins. It would be like Dereck saying that you shouldn't trust Cameron because of her skin color or because she's a lesbian or is Russian.

Sarah may be right to keep her guard up around Cameron, but I hope she does the same with Dereck because being family isn't a guarantee of safety in this long-since screwed up situation. "

"So who stole the Turk?

3) I think the living skin she has makes it an organic living skin. So its an organism. No?"