This is the first book I have read by this author. I was very pleasantly surprised. Changeling is the middle book in a trilogy that follows the lives of three half-human, half faerie sisters who live "earth-side" due to being banished and work for the OIA (Otherworld Intelligence Agency). I have ordered the first book Witchling and pre-ordered the third book Darkling. The first sister is obviously a witch, the third a vampire, and the second sister, who this book is about, a changeling whose "were-form" is a tabby cat. The three sisters live together in a three storey victorian house with a Maggie, a baby gargoyle and Iris, a house sprite. This book pretty much has it all. It holds your attention with a great story line, makes you laugh, there's plenty of action but also many warming moments with the interplay between the sisters and other characters. The story line starts with Delilah, the changeling, investigating the recent deaths of members of the Rainier Puma Pride which is just the start of a whole series of adventures involving demons, a dragon and a powerful immortal, the Autumn Lord.