In one correspondence the stalker asks whether the new family brought him the 'young blood' that he requested.
"I have be [sic] put in charge of watching and waiting for its second coming; my grandfather watched the house in the 1920s and my father watched in the 1960s,' one letter read.
"It is now my time; Why are you here? I will find out; Now that they have it to flaunt it, they pay the price..."
It went on: "I asked the Woods to bring me young blood."
One of the other three letters said: "Who am I? I am the Watcher and have been in control of [the home] for the better part of two decades now.
"The Woods family turned it over to you it was their time to move on and kindly sold it when I asked them to."
The Broadduses, who have young children, refused to move into the home and have been unsuccessful in their attempts to sell the property.
The family sued the prior owners of the house in June 2015, claiming that they also received a letter from "The Watcher" but never disclosed it.
That family has since counter-sued, stating that the letter they received was not threatening and alleging that they were defamed through the amount of attention given to the lawsuit.
Residents of the neighbourhood have joined together in protest of the Broadduses' lawsuit against the town, arguing that the smaller lots would be out of character for the community.
Westfield police investigated the letters but have been so far unable to identify their author.
