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Kathryn "Kat" MacLaren, played by recurring cast member Leah Cairns, is FBI Agent Grant MacLaren's wife. They have been married for approximately nine years prior to Grant being overwritten by a traveler.

History

She was first seen in the second episode, Protocol 6, making coffee for Grant and asking about his night. She noticed that something was a little off when he didn't like the cow's milk in his coffee and called her 'Kathryn' but thought he was just tired.