Gunpowder Milkshake Movie Review: Silly but fairly entertaining

Professional assassin, Scarlet (Lena Headey) is forced to abandon her daughter Sam (Karen Gillan) - left in the care of Nathan (Paul Giamatti) at the Firm, and go on the run. 15 Years later, we see a grown up Sam playing the same tune her mother did, as a cold blooded assassin