A harsh pounding on the front door of the cottage stopped Fenrir mid-thrust. No one had bothered them the entire time she had been there. Suddenly worried that she had finally been discovered, Hermione could feel her stomach twist and turn into knots. Her companion took a deep sniff of the air. A low growl accompanied the tensing of his entire body. Whoever it was, they were not welcome. He pulled himself out of her body when they were both hit with the unmistakable feel of a Homenum Revelio. They knew that there were two people inside the cottage. Based on the reaction he had when he sniffed the air, she got the feeling that Fenrir was aware of who was waiting outside.