Mister Magic by Kiersten White
I have hazy memories of a show I watched as a young child, something that played early in the morning, before any of the normal cartoons came on. There was never anyone else up with me flipping channels before the sun rose, so I can't ask and I can't remember enough details to even try an online search. Mister Magic captures that feeling perfectly. It was a show that ran for years, but there are no recordings or written records. No one knows who produced it or what channel it aired on. The adults who watched it as children can't agree on exactly what Mister Magic looked like, whether he was a puppet or animation or a live actor. They do agree that a tragedy ended the show and a few claim that they saw the episode where it happened. Now the members of that last Circle of Friends, the children who participated in the last season of the show, are reuniting. Online rumors are flying fast.
Val has lived on an isolated ranch with her father since she was eight years old. She knows that something awful happened when she was a child and has always feared that she was responsible, but she doesn't know who they're hiding from. When two strangers show up at her father's funeral, thrilled to have found her, she learns about the show that she'd completely forgotten. And the reader starts to learn about it through her eyes.
I absolutely loved this book. There's something dark lurking behind all of those childhood memories and it takes a while to get to what it is, but it all comes together into a creepy and satisfying conclusion.
Disclosure -- The publisher provided me with an advance review copy. This post contains affiliate links.