I'll wait forever... (The Black Phone AU)

Soo this was a completely random idea I hadand so sorry if someone has already mad something like this I don't want to be copying!! But this au for tbp is basically Finney gets kidnapped the same way he does in the movie but he gets kidnapped first... This part is weird and unexpected but the grabber grows an obsession over Finney and decides to not kidnap the other boys and keep Finney in his basement for as long as possible... Ok ok ‼️this is not canon‼️ these events didn't happen in the book or movie, that is the concept for this universe. Anyways carrying-on Robin looks for Finney every night and day possible so does Gwen (important to note that Finney was trapped in the basement for 1 year and 1 day) after so long will they be able to bring Finney home? Or will the grabber change his mind and k1ll Finney instead? You'll have to read to find out!!