Day 23 has become our Official Day of Evil Children, although you wouldn't know that if you were watching this trailer for 1979's The Brood, from David Cronenberg. Seriously, if you know the film, you will know less about what's going on with it after watching this trailer.
Why do we even present it to you? It's a perfect example of how, back in the day, trailers could be even worse than some of the ones we see now. And how you can spend three minutes telling people...nothing.