Rose Petal Revenge | Agatha Frost
"All Claire's best friend Damon wants for his birthday is to celebrate with his far-flung friends. At a convention for science-fiction fans. With cosplay. But when Damon’s once close-knit group of online friends splinters in the week before the event, threatening to ruin Damon's birthday and the plans he's been looking forward to for months, it's Captain Claire to the rescue – or it will be, just as soon as her mother puts the finishing touches on her costume. Of course, what Claire doesn't know (aside from pretty much anything to do with sci-fi) is that amid the hubbub of meet-and-greets, merchandise, and video game tournaments, it's all fun and games... until someone gets stabbed. Thrown headfirst into a murderous friend group filled with lies and deception, can Claire solve the case before the bodies pile up?"--Amazon.com.