Complex sentence: When they are close to victory, the Holts take Amy, Dan, and Alistair captive and made them lead them to a place where they might believe a clue might be.
Split into simpler sentences: When they are close to victory, the Holts take Amy, Dan, and Alistair captive. They make Amy, Dan, and Alsitair lead them to a place where they might believe a clue might be.