Fandemic. Bigtime, #7

Piper Perez has always wanted to be a superhero. Always wanted to wear a cool costume, have amazing abilities, and save the day. There's just one problem-Piper doesn't have any superpowers. So she focuses on other things. Facts, figures, memorabilia. Piper knows and collects it all, about both the superheroes and the ubervillains who roam the streets of Bigtime, N. Y. Piper's friends jokingly call her a fandemic-someone who is a superfan of all things superhero.
The nickname is truer than anyone knows, especially since Piper can't stop thinking about Swifte, the speedy hero who broke her heart months ago. But someone has been killing off Bigtime's heroes and villains. When one of Piper's friends is murdered, she vows to do whatever she can to help bring the killer to justice, superpowers or not. All the clues and information she gathers lead her to believe that Swifte is the killer's next target.
Piper has always wanted to be a hero, and now she'll have to use all of her fandemic knowledge to save the man she loves-or die trying.. Note: Fandemic is around 43, 000 words. It is Book 5 in the Bigtime superhero series.