Complex sentence: Doug captures Rachel and drives into the desert with the intent to kill her, but reconsiders when she reveals she's abandoned efforts to uncover Frank Underwood's crimes and reveals her new identity to him.
Split into simpler sentences: Doug captures Rachel and drives into the desert with her, intending to kill her. He reconsiders when she reveals she's abandoned her efforts to uncover Frank Underwood's crimes and reveals her new identity to him.