Complex sentence: They learn that Chow had lied to them; the villa was never his; it was, in fact, Marshall's own villa and the gold they stole was the other half he didn't get from Marshall.
Split into simpler sentences: They learn that Chow had lied to them; the villa was never his. In fact, it was Marshall's own villa and the gold they stole was the other half he didn't get from Marshall.