There are some familiar elements to those that read a lot in this genre, but the writing is immersive and the plot grips from the very start. Focussing on one of the twins, Edward, keeps the action tight : the exploration of the characters' various insecurities, and the themes of bullying, adoption and same-sex parents could have made the narrative feel secondary but they are skilfully integrated and is not at all intrusive. This is a riveting read, I really enjoyed the authors' previous series The Strangeworlds Travel Agency, and this is a great start to this new series. Roll on the next one