I'm currently a freshman in college. One of my close friends in my pledge class is on the soccer team and heard this story with too much evidence and corroboration (pictures of the report on the Boston pd blotter, the text conversation, etc.) for it to have been completely fabricated.
So, my friend is close with this guy on the soccer team who recently went on a Tinder date with a junior at a college near us. She's from around Boston and commutes to her school. He matches with her on Tinder, takes her to dinner, they're having a good time and get to talking about their lives and such.
On the date, she tells him about another date she had recently been on that left her with a bad feeling. She had matched with a normal looking guy on Tinder from the area (not a college student) and agreed to meet up after talking for a while. They went to a restaurant to get dinner, and they had planned to go to a pretty popular bar near there for drinks after. She got a bad feeling by the end of the dinner and that didn't end up happening.
Apparently it wasn't anything too bad, she could just tell he was a bit strange and not her type (described him as 'quirky' before all of this went down). So, she gives him an excuse and goes home; normal, their texts after it were amicable and she thinks it was just a bad date.
Couple days later, she meets up with the soccer dude from the beginning of the story and they really hit it off.
Her parents leave a few days after that for a trip, which she had told soccer guy about. The date went really well and he planned on going over at some point to chill with her. The first night they're gone, she wakes up to a noise in the kitchen; her room is on the second floor, the kitchen on the ground floor, and there's a basement under that. Normal house in Back Bay. So, she thinks she heard something and it freaks her out badly enough that she calls her parents.
They say, you know, 'everythings fine, you're probably just hearing things because its an old brownstone, don't worry.' Realistically I think that would have been anyone's, myself included, reaction.
Second day, she's upstairs and hears a noise from the TV room behind the kitchen. They don't have any pets and these were the types of noises that would make you get up from what you were doing to make sure something hadn't fallen or whatever. She described to my mutual friend as feeling like if she had gone downstairs at that moment that something really, really bad would have happened. Gut stuff. Anyway, she calls her parents again and they say the same thing. She gets up the nerve to go downstairs and everything's normal. Nothing moved, nothing knocked over, alarm records didn't show any doors opening. She's like 'yea alright I'm probably freaked out over nothing.'
Third day, everything's fine. No noises, no cause for concern. My mutual friend was going to go over but had a Unified midterm and couldn't make it (notoriously hard class at MIT). Anyway, that evening she's watching tv in her room and hears a noise somewhere downstairs. This time, it wasn't something she could ignore. All of her adrenaline was firing and she was actually freaking the fuck out. This time, she calls the cops without asking her parents. They say basically the same thing as her parents lol. "Yea, all of our cars are out right now, since you just heard something we'll try to have someone over to check outside your house in around 2 hours."
Literally 4 minutes later a fucking squad of cop cars rolls up. But not just cop cars, like full on riot-squad van, knocking-down-doors shit. They rush the house, and she's watching all of this from somewhere upstairs. Cops throw the front door open, and immediately fan out, sprinting through every room in the house and yelling 'clear' and some other stuff she didn't remember. One of them tries the basement door. Locked from the inside. They break down the flimsy door and rush the basement.
They found her first Tinder date in the basement. He had completely covered one part of the room in some kind of heavy plastic tarp. He had a bag of heavy duty butchering knives with him. The cops immediately force a surrender and take him.
In the post-mortem, she was told that the cops, when she called them, heard a second phone pick up, and when she hung up, they heard breathing and a click before he could hang up the basement phone.
The mutual friend heard about all of this after the fact, and the thing that really gets me is the part about the cops hearing him on the phone. When my friend told me and some of the guys in my fraternity that part it felt like all of the oxygen left the room.