I just watched the trailer for The Vast Of Night, an Amazon Prime Video feature movie that's "coming soon to theaters and Prime Video." Looks like creepy fun!
In the twilight of the 1950s, on one fateful night in New Mexico, a young, winsome switchboard operator Fay (Sierra McCormick) and charismatic radio DJ Everett (Jake Horowitz) discover a strange audio frequency that could change their small town and the future forever. Dropped phone calls, AM radio signals, secret reels of tape forgotten in a library, switchboards, crossed patchlines and an anonymous phone call lead Fay and Everett on a scavenger hunt toward the unknown.
Here's Variety's positive review.
Image: Vast of Night publicity still