'Killers' sneak peek clips promise action and laughs

killers-heigl-kutcher-500.jpgGovernment super-assassin meets sweet unsuspecting computer tech girl.

So goes the story of Spencer ( Ashton Kutcher) and Jen ( Katherine Heigl) in this summer's "Killers." The young couple fall in love, get married and live happily ever ... well, at least until they discover there's a hit out on their lives.