Parents need to know that Unforgettable is a thriller about a woman (Katherine Heigl) who tries to ruin her ex-husband's new relationship. Things get pretty violent; there are scenes of a man beating up a woman (punching and throwing her) and her stabbing/slicing him. Other characters are stabbed and hit with a fireplace poker -- bloody wounds and blood stains are shown. There are two fairly graphic sex scenes; while neither of those includes graphic nudity, there's partial nudity in another scene (bottom, part of a breast) when a woman prepares to step into a tub. Masturbation is implied, and there's kissing, innuendo, and sex talk. Language isn't frequent but does include a few uses of "f--k" and "s--t." Characters drink socially on several occasions, and one character drinks alone, while another hides cigarettes. Apple iPhones and Facebook make prominent appearances, since a key part of the plot involves social media manipulation (which leads to the movie's only notable takeaway: Don't put all of your most sensitive information on your phone!).