Bound to Vengeance (2015)

Eve, a young girl held captive, manages to beat her kidnapper Phil and successfully unlocks the chain holding her leg and uses it to chain Phil's leg. Later she discovers a revolver and a folder containing photos of some girls, along with their names (even her own photo). She quickly learns that she's not the only victim of Phil. She holds the revolver at Phil, asking him where the other girls are. He dares her to kill him, telling her that he's the only one that knows their whereabouts.