First comes apocalypse then come murder (a strange sibling novel)

Many things come to an end usually not the world that's a exception if your Brianna, Jane, Liam, Silvia, Jake and Ava. Then you'd suspect it. And you'd suspect Ava and Jake to start it. Obviously you would also suspect writers to write about it. But you wouldn't suspect that a daughter of a long lost enemy of the siblings father and her friend to write about it. Or anyone to survive