Hanaka and his guard disappear and the Mercury crew goes in search after discovering that one of their own is missing. Kate and Nelson ponder how to keep Hernandez from discovering alien technology. Barnes and Sam head for a stakeout as they continue to investigate McMillan. Thornton and Scarlett arrive in Canada to begin their search for the origins of Major Meredith. JoMac awakens to discover that he's where he shouldn't be.

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