Noelia turns ten and gets a new phone. It's the best day of her life - until she discovers that someone is writing nasty comments on her friend's music videos. Noelia gets really cold. Who does that - and how should Noelia be able to help her friend? Noelia's revenge is the second book in a series about Nollan. The books will make it easier for adults and children to start conversations about life online.

Caroline Engvall is a Swedish author, journalist and lecturer who has written several top-selling books about children in the Swedish sex trade.

She runs several projects which aim to help children who are subjected to criminality online, including educational materials, the Safe Selfie Academy, several help sites, podcasts and she has also participated in TV documentaries.

She is the winner of the 2018 Elise Lindqvist Award and the Brave Mother of the Year Award, she has spoken to the Swedish parliament and government on the matter and she has been engaged by the Swedish Royal Family (Queen Silvia and Princess Sofia) to speak on the subject both in a private capacity and for the Childhood Foundation.