A family is suing the people who sold them a million-dollar home in New Jersey without forewarning them about a mysterious stalker who had a mentally disturbed obsession with the house.

Earlier this month, Derek and Maria Broaddus filed a civil complaint in Union County Superior Court against their home's previous owners for "knowingly and willfully" failing to disclose the home's history about "The Watcher," a man who "claims a right of ownership and/or possession" of the house, according to The Washington Post.

According to court records, the Broaddus family began receiving chilling letters from "The Watcher" shortly after they bought and moved into the $1.3 million home in Westfield last year, reports The Huffington Post.

The first letter, which arrived on June 5, 2014, informed the buyers their house "has been the subject of my family for decades," reports The Courthouse News Service.

"My grandfather watched the house in the 1920s and my father watched in the 1960s. It is now my time," it read, according to the complaint. "I have been put in charge of watching and waiting for its second coming."

The writer also seemed to make threats against the couple's three children, writing, "I asked the [previous owners] to bring me young blood ... once I know their names, I will call to them and draw them [to] me."

Over the next several months, the letters seemed to become more intense and ominous.

"I am pleased to know your names now and the name of the young blood you have brought to me," one allegedly said. "Who has the bedrooms facing the street? I'll know as soon as you move in ... it will help me to know who is in which bedroom, then I can plan better."

Meanwhile, another letter asked, "Have they found out what's in the walls yet?"

"Do you need to fill the house with the young blood I requested?" it read. "Once I know their names I will call to them and draw them out to me."

The couple reported the situation to police; however, officials were unable to identify the stalker. As a result, the family was forced to flee their property.