Grimm

It was revealed at Comic Con that actual descendants of the Brothers Grimm reside in Portland. The producers had no idea until a member in the audience told them.

Whenever the episode includes a room number (hotel room, hospital ward or bed) or address, the number is the combination of the number of the season and of the episode

Each episode opens with a quote from various fairytales or folk stories, which relate to the episode in some way.