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An audible memory challenge stumps the teams. Demetrius meets a key paternal relative. Marcus and his dad share a heartwarming discovery. A trip to Day 10 is on the line for two teams with two strikes!
Team Green gets off to a rough start when Marcus's dad shows up late to pick them up. While they set off toward Vegas, Team Red heads toward a relative that will help Elizabeth understand more about her maternal side.
After 9 days on the road, the remaining teams test their challenge skills in the desert southwest for the Season 5 championship.