One night in June 2014, Derek Broaddus had just finished an evening of painting at his new home in Westfield, New Jersey, when he went outside to check the mail. Derek and his wife, Maria, had closed on the six-bedroom house at 657 Boulevard three days earlier and were doing some renovations before they moved in, so there wasn’t much in the mail except a few bills and a white, card-shaped envelope. It was addressed in thick, clunky handwriting to “The New Owner,” and the typed note inside began warmly:

Dearest new neighbor at 657 Boulevard,

Allow me to welcome you to the neighborhood.