def get_episode_thumb_path(self, ep_obj):
        # type: (sickbeard.tv.TVEpisode) -> Optional[AnyStr]
        """
        Returns the path where the episode thumbnail should be stored.
        ep_obj: a TVEpisode instance for which to create the thumbnail
        """
        if ek.ek(os.path.isfile, ep_obj.location):

            tbn_filename = ep_obj.location.rpartition('.')

            if '' == tbn_filename[0]:
                tbn_filename = ep_obj.location
            else:
                tbn_filename = tbn_filename[0]

            return tbn_filename + '-thumb.jpg'