Dead of Summer
Set primarily in the early '80s at a sleep-away camp with some very unexplained and gruesome murdering going on (including a truly bonkers death by bear trap), this 10-episode Freeform series dropped quietly in, you guessed it, the dead of summer. It's co-created by former Lost writers, and it shows: There's flashback storytelling, the same whooshing sound effect for dramatic emphasis, and Elizabeth Mitchell. Things gets a bit ludicrous by the time it ends, but this is totally worth the binge.
Where to stream it: Freeform