From Introduction:
This short scenario is intended for a British group of OV investigators, although with some modifications can probably be amended to run anywhere. The scenario is designed as a quick single session investigation, although it can be augmented with extra scenes if required. The investigators actually have a “ticking clock” of the Countryside Alliance protest which is due to start in London the day after the players are called to investigate the ritual – however the players aren’t aware of this until the end of the scenario, so feel free to change the timing and date, if the players are dragging their heels and obviously aren’t going to get there on time.
Hours of darkness and daylight used in this scenario, assume that it is set around March. (3rd March if you want to follow the theme of 3s being a ritually significant number)