Their conversation is overheard by Thomas Potts .
Conversation gives him the idea to search out the witches that Nicholas refers to , and by so doing gain favour with King James , who is well known to have an interest in witchcraft .
Their conversation is overheard by Thomas Potts , and it gives him the idea to search out the witches that Nicholas refers to , and by so doing gain favour with King James , who is well known to have an interest in witchcraft .