mrs. broadus, i am pleased to know your name now and the names of the young blood you have brought me. >>ter: it also details westfield's notorious list family murders and has become a massive hit despite a police investigation, private investigators, and forensic analysts all looking into the case. the watcher was never identified. >> i felt very bad for derek and his wife, maria. i think they -- you know, they were very troubled, which i would be too, if i received those at my new home. >> reporter: andy skabitski was mayor of westfield at the time. >> it was reported we didn't do enough, but trust me, the westfield police department is very capable, unlike those depicted in the movie. >> they did all they could with the information they had in that they did dna samples on the few letters. there were only four letters total, so they didn't have a lot to go on. >> reporter: the family of five so fearful, never moved in. they struggled for years to offload the home, ultimately taking a $400,000 loss when they sold it in 2019. later selling their story rights to netflix. >> "i am the watch