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Cassie revisits her greatest hits with Ross as her new target, Nina voices suspicions of Sienna, Adam and Alya give Abi conflicting advice, and Carla's update makes Betsy nervous.

The teams land in Lisbon to take on The Dark Destroyer and The Sinnerman. The contestants must navigate their way to the finish line by successfully completing games involving custard tarts, tins of sardines, phone boxes and tuk-tuks.