Complex sentence: "Don't you make me out to be a liar", he told Spear, then with one swift motion he grabbed Spear around the neck, pulled out a knife, and sliced Spear's throat.
Split into simpler sentences: Don't you make me out to be a liar, he told Spear. Then, with one swift motion, he grabbed Spear around the neck, pulled out a knife, and sliced Spear's throat.