Atoning is set after Armstrong's Darkness Rising trilogy. Chloe, Derek and gang go on a mini-camping adventure that gets interrupted when someone tries to kidnap them. This novella is more for fans of the series, but I read it to see if I could to get into Armstrong's Young Adult books. After reading this one, I'm unsure if I can.
Armstrong has said that she started writing Young Adult because she wanted to create something that her daughter could read, and it shows. This story was laden with morals that Armstrong probably wanted to pass on to her kid. This is fine, except when all of your main teen characters are extremely responsible and understanding to the point of having no major flaws. It makes the characters boring and gets pretty heavy handed when the adults are all commenting on how crazy responsible they are.
However, I'm willing to give Armstrong the benefit of a doubt and will probably one day read a full length book in this series. I'm just not in any rush to do so.