Overview
The Black String is a 2018 American psychological horror-thriller film created by Brian Hanson (co-writer, director) and Richard Handley (co-writer, producer, actor), starring Frankie Muniz, Blake Webb, Chelsea Edmundson, Richard Handley, Cullen Douglas, Colby French, Laura Richardson, and Mary K. DeVault.
The film was announced in 2016 and debuted opening night of the 2018 Austin Film Festival and was later purchased by Lionsgate Home Entertainment, for North American distribution in 2019. From 2019 to 2021, the film was also released for Video on Demand, DVD, and Blu-ray worldwide.
Plot
Jonathan Marsh is a lonely twenty-something, working night shifts at a local liquor store with his friend and shift manager, Eric, “The ERC.” One night at his apartment Jonathan is summoned through his TV by a seductive woman, beckoning him to come “meet sexy singles in his neighborhood” and call the 1-900 number on his screen. Soon, Jonathan finds himself on a blind date at Jenny's Diner with Dena. She coerces him to take her to his apartment, where they engage in a one-night stand. The next morning, Jonathan awakens alone in his apartment, no sign of Dena, but he does discover an uncomfortable and unsightly rash on his abdomen.
Looking for answers, he returns to Dena's but is greeted by a suspicious man who denies she lives there. Jonathan's paranoia increases when he is stricken with nightmarish visions. His physical symptoms worsen as well, eventually spreading to his arm. Unable to sleep, Jonathan returns to Jenny's Diner, where he receives a phone call from his friend, Eric, who tells him he's in trouble and to come over to his place immediately.
From Wikipedia (CC BY-SA 4.0).