Spoilerphobes beware

There is a new trailer today for the upcoming 4th series of BBC's Sherlock that is reported to be hugely spoilery. Please exercise caution if you want to avoid getting spoiled.

If you are not a spoilerphobe, please remember to be considerate of others and put images and discussions for future series' under a cut. So far every post I've seen has been really good about warning for spoilers, but it's so easy to get caught up with excitement and let things slip, so please be considerate of your fellow fans' experience.