Wait...is there an "I Spit on Your Grave 4"? I think they have only done it up to Part 3. Say no more because 2015's "Even Lambs Have Teeth" could very well be that part 4. With a bit more frivolity and a little less ominousness, two young babes endure seedy rape and torture and traipse through rural Washington with axes and weed-whackers in search of justice. I know, we've all been there. As serious as this sounds, this film is done with a certain playfulness that will no doubt offend the perpetually offended.