It's only a couple of weeks before the third book in this gorgeous nature series is released and I think it might be our favourite yet. With a dramatic rescue and a dramatic capture, it will keep young readers on the edge of their seats, engage them with charming characters and educate them on how we can look after the environment.

Cora and Jax are desperate to be made official Keepers but when they are tasked with building and monitoring a bug hotel, their focus is distracted by a baby otter who needs rescuing. Can they use the raft they have been working on with their friends to save the day? And will everyone get the happy ending they are hoping for?

This cleverly devised concept ticks so many boxes. Not only is there a strong environmental focus which highlights the importance of rewilding, each story features an animal rescue too. The Keepers - tiny, secret people who work tirelessly to repair the damage Ruffins cause - are warm-hearted and fun, with an element of magic, but who also take their responsibilities very seriously.

The story is both entertaining and educational. Julie Sykes balances the more serious moments with lots of friendship fun: parties and raft races and mouth-watering descriptions of food. The gentle themes of teamwork, discipline and when to abide or not abide by rules are not didactic and yet the consequences of a Keeper's choices is always explored. This is a series perfect for nature lovers, animal lovers, lovers of secret magical folk and a valuable resource for teachers who are looking for stories to support their curriculum topics.