14-year-old Laureen Rahn was last seen in her apartment in Manchester, New Hampshire on April 26th, 1980. She spent the evening drinking beer with a male and female friend while her mother Judith was away at a tennis tournament. At some point, the boy heard voices in the hallway and left through the back door, thinking Judith was coming home. He stated he heard Laureen lock the door behind him.
When Judith finally returned at midnight, she found the building completely dark because the light bulbs on all three floors had been unscrewed. She checked Laureen’s room and thought she saw Laureen asleep on the bed. In the morning, however, this turned out to be Laureen’s friend, who said that she had last seen Laureen going to sleep on the couch. Laureen’s clothes and new sneakers were in the living room, and the back door was open.
The police investigation went nowhere until Judith looked at her phone bill and discovered she had been charged for three phone calls made from Santa Monica, California on October 1st, 1980, three months after Lauren went missing. Two of these calls were placed from a Santa Monica motel to another motel in Santa Ana. The third call was to a teen sexual assistance hotline run by a plastic surgeon. Authorities in Santa Monica questioned this surgeon, and he denied knowing anything about Laureen.
Judith hired her own investigator in 1985, who questioned the doctor again. This time he altered his story and said that his wife was sometimes visited by runaway girls (!?) and that one of these girls may have been from New Hampshire. He also believed that a colleague of his wife’s named Annie Sprinkle knew more about these runaways. Authorities looked into this and found that Sprinkle was involved in the pornography industry, but nothing was found linking her to Laureen.
Another investigator traveled to Santa Monica in 1986 and learned that the two hotels may have been used by a child pornographer named “Dr. Z.”, but authorities couldn’t find a connection between “Dr. Z” and the doctor who ran the hotline.
For a year after the disappearance, Judith reported getting regular phone calls at around 3:45 a.m., but there would be nothing but silence on the line when she answered. She received similar calls around the Christmas holidays for several years until she finally changed her number. According to Charley Project, a childhood friend of Laureen’s received a call from someone claiming to be her in 1986. His mother answered the phone, but unfortunately the article doesn’t elaborate on what the caller said.
In the previous thread about this, the OP quoted someone from a forum post who claims that her mother was the friend who was with Laureen when she vanished. Her mother said that they were hanging out with two guys that day (not one as stated in Charley Project) and that Laureen may have left with one of them. The guy who left through the back door committed suicide in 1985 and is not considered a suspect.
It is also worth nothing that other women, Denise Denault and Rachael Garden, of similar physical appearance to Laureen, disappeared from the same area within a six-week time period. Their cases are also unsolved and have never been linked.