Marshall Mann

Marshall (Frederick Weller), Mary's partner, is a fifth generation US Marshal. There was never any question about what he'd do with his life. Despite this laser focus on his career track, Marshall is by no means limited in his intellectual life. He knows a little bit about everything, which comes in handy when he and Mary are working a case or when they could both use a little comic relief as a distraction.

He and Mary are not only great partners; they're also great friends—but perhaps eventually they'll be something more. For now, these polar opposite personalities make a great team and in their own way, take care of each other like no one else can.