Black Tower

Four hundred years ago, Devon Marek was a spoiled aristocrat with a passion for the hunt. His first teacher, Duncan MacLeod, forced him to give up his lands and title when he became Immortal -- and Marek's never forgiven him for it. Now Marek has built a new empire, and he's ready to hunt his most dangerous prey yet: MacLeod. Obsessed with revenge, Marek imprisons the Highlander in a deserted highrise office building... with a gang of deadly mercenaries on his tail.

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S06E07 - Unusual Suspects