Marshall Mary Shannon, marriage isn’t something she’s interested in, due to the confidential and dangerous nature of her job. Unfortunately, the same can’t be said for her latest assignment: Treena Morris (Missi Pyle), a flashy serial bigamist who entered WITSEC after stealing millions in diamonds from her former husband and is now planning a huge wedding to another rich guy. After last week’s promising episode that revealed Mary’s compassionate side, this week’s show took some big steps backward with a predictable storyline, little character development and elements of action and comedy that just fell flat….