The Pan Am crew rolls the dice in more ways than one in glamorous Monte Carlo: Kate and Maggie square off for the attentions of a handsome passenger (guest star Goran Visnjic, "ER," "The Girl With The Dragon Tattoo"), but things get more complicated when Kate learns the sexy stranger is involved in her next covert mission; and Dean gambles with his career when an attractive, wealthy woman (guest star Erin Cummings, "Detroit 1-8-7") on the flight tempts him -- and he later discovers who her flying companion is