Though she started making experimental films with a Super 8 camera borrowed from mentor Derek Jarman when she was barely 20, Joanna Hogg was 47 years old when she directed her first feature, 2007’s Unrelated. Her late start may account somewhat for the total assurance of that film and those that follow—the manner in which she immediately establishes her distinctively distanced, observational style; her enigmatic balance of tone; and her favorite subjects for study. In her first three features, available here, one glimpses clashes between sexes, generations, and classes beneath the apparently placid surface of every image—a perfectly coherent trilogy in which each film is unique.