This is a fascinating representation of every parent’s worst nightmare. Director Lynne Ramsay does great work with the material, as she films in such a way to reflect the deteriorating mental state of the protagonist, with disorienting edits and shrouding much of the film in mysterious unease. But some of the risks she takes don’t work. For instance, the film’s symbolism was too heavy-handed and obvious, and the film is rather simplistic in terms of its themes. The film’s biggest asset is Tilda Swinton’s remarkable performance, who manages to bring gravitas to such a dynamic and complex character. Her performance alone makes this film worth watching. This film may be relentlessly bleak, but it’s a great watch for anyone willing to stomach the material.