16-year-old orphan Tom is not looking forward to having to stay at his boarding school over the summer. So when he gets a mysterious letter from his uncle, whom he has never met, inviting him to visit his farm in Suffolk for the holidays, Tom jumps at the chance.
However, he quickly realises something is menacing Mundham farm: but does it come from outside, or from within?
Who or what are the Samdhya, the supernatural people described in the old handwritten diaries Tom finds in his uncle’s house?
As Tom starts to uncover the truth, he is confronted with a stark choice: on the one hand, infinite power; on the other, freedom. Which will he choose?