The first gift is the presence and the beautiful performance of Gemma Whelan. I know, too much GoT.... But she does a splendid performance. The second present - the tatoo of old lady. The minimalist, too. And the latch, off course. But the most significant detail - it is a real well crafted horror. Without easy solutions or pretextes for thrill. Its realism, the steps of storytelling, the gestures, the door - reminding old fairy tales- , the end are real good points. So, many gifts. Not only for the fans of genre.