Set in 1973, amid a forest of shag carpeting, “Annabelle Comes Home” is a nice little summer surprise, and quite unexpectedly the freshest of the three “Annabelle” movies spun off from the larger “Conjuring” galaxy of horror films. Most of the action confines itself to the suburban Connecticut split-level home of demonologists Ed and Lorraine Warren (Patrick Wilson and Vera Farmiga), who have business out of town and leave their 10-year-old daughter, Judy (Mckenna Grace), in