The Special Events Director at the casino. Originally she was supposed to play the casino's personal hooker, but at the last minute during the pilot filming, Gary Scott Thompson changed it back to events director. A Las Vegas native, her father sexually abused her when she was a child, and Danny always came to her rescue. In season three, she was rehired and promoted to Hotel Manager. In the fourth season, she helps her stepmother and half-sisters testify against her father - a case which was lost. In the episode "Bare Chested in the Park", she was shown purchasing a revolver to shoot her father in the following episode. She was involved in an on-and-off relationship with Danny, who later proposed to her in season two - a proposal which she rejected. Mary is currently hiding from the law for her part in the murder of her father, but is apparently safe, as she sent Danny a photo with a house and white fence (her dream house).