One-Shot: Assassin's Hero

Okay since my One-Shot Fanfic, 'True Love' was sad, lets switch gears to something that is more darker. Who would save Anna and Elsa when they have been captured? Kristoff? Hans? An Assassin? This has hints of Elsanna in it so you all know the drill. Don't like it, then don't read it. Don't forget to R&R, thank you.