The owners of a New Jersey home have received a fourth creepy letter from a letter-writing weirdo known as “The Watcher.”

A lawyer for Derek and Maria Broaddus of Westfield told a judge in court papers the letter arrived Feb. 20.

The letter contained specific threats and was "more derogatory and sinister than any of the previous letters," lawyer Lee Levitt said in court papers filed in early March, NJ.com reported.

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Westfield police declined to comment on the latest letter, citing an ongoing investigation.

Broaddus and his wife say they can’t live in their six-bedroom home because of the letters.

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The first three arrived in 2014 after they bought the home for $1.3 million.

One asked the couple, who have children, if they brought him the “young blood” he requested.

They 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 countersued, stating that the letter they received was not threatening and alleging that they were defamed.

Broaddus and his wife say the stalker has a "mentally disturbed fixation claim” on the home.

They are also suing Westfield because the town's planning board rejected their plan to raze the house and subdivide the land so they could build two houses.

“The Watcher” said in a letter that the house has been watched by his grandfather in the 1920s and his father in the 1960s.

“I have been put in charge of watching and waiting for its second coming,” the letter said.

The Associated Press contributed to this report.