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.

Despite being polar opposites, the two make a great team. As much as Marshall can sometimes get on Mary's very last nerve, she is indebted to him and Stan for risking their lives to save her from that horrific kidnapping at the hands of a maniacal drug dealer. But that doesn’t mean Mary is going to stop bossing Marshall around or letting him know when he’s irritating her.