Unknown

Once again, the Doctor makes a mistake with the TARDIS, and unintentionally lands in the Lake District in the early 20th century. He and Martha soon discover that the Lakes are crawling with hunters, all seeking to kill the elusive 'Beast of Westmoorland'. But as the hunter's plans come close to fruition, the Doctor discovers another plan at work. As the hunters become the hunted, and with the enemy literally hiding in plain view, the person you thought you could trust may not be all that they seem...