Complex sentence: After Helen reports her findings about the victims to Reacher, he suggests that the owner of a local construction company was the intended victim, with the killing of other random victims intended to cover up that fact.
Split into simpler sentences: After Helen reports her findings about the victims to Reacher, he suggests not all the victims were random. That the owner of a local construction company was the intended victim, with the killing of other victims intended to cover up that fact.