By the time Frank had joined the party, Alice was the only one left. The Forbidden Forest had always been... well, forbidden to him. Except perhaps when there were detentions that had needed to serve. A moment before he was at his destination, and he willed the sound of apparating to be dulled. Lucky enough for him, his was dulled by Remus' silencing charm. The forest made his senses work overtime, every tree could have been an enemy, the wildlife. Certainly there was nothing that he could do if they were, but he was hypersensitive to any rustling that came from deep within the woods. Wand at the ready, he moved in the direction he heard movement in, figuring that was either Alice of Remus. Maybe, if Frank was lucky, he could see his son again. That, however, was something he wasn't going to allow to get his hopes set on. Just in case.