I admit I was a bit doubtful about this series at first; however, I also admit that after reading the first book I checked the second one out of the public library within a week. Now, about a week later, I am listening to the third book on audio. Although I was unsure in the beginning, I think this is a good series for all readers, not just juvenile. The characters are very likeable, the story is full of adventure and leaves you wishing you had a spirit animal.
So far the three authors have successfully weaved the books together despite the slight change in voice (that was something I was worried about). I highly recommend this book and am looking forward to reading the next few.