“Three May Keep a Secret” by Carlie St. George, Strange Horizons 2017-11-20, fantasy (horror) short story
Scarlett had been told a ghost story by her friend, Sammy, and swore never to tell it to anyone else. When Scarlett breaks that promise and drunkenly passes it on to her new friend, Matt, both find themselves haunted in different ways. Ultimately, the story, its hauntings, and its secret become a matter of life and death (again).
There’s something “Afterschool Special” about this in the sense that it’s targeted at kids and they’re supposed to say, “I’ve learned something today,” after reading it. Also, there’s a glitch that bugs me when the protagonist breaks her phone and then, without explanation, is using a phone right after that. That said, this is a remarkably fast-paced and action-plotted story (especially for Strange Horizons) with a weighty theme and is generally effective and powerful.