“One Night Stand” will leave you feeling a bit parched and waterlogged all at the same time. “One Night Stand” is interesting in that it provides not only a new species of Wesen but also highlights Nick’s (David Giuntoli) newly enhanced Grimm powers. I feel, however, like it is a filler episode with a lackluster fight scene on the docks. I’m also getting an uneasy feeling about Nick’s Grimm prowess being heightened because something just isn’t right about it.