head, you have to use fake IDs and live under the radar... Maddi: The ending was once again surprising, which is what we are looking for in a series, keeps us guessing and you have me guessing ... do you know what you're doing with Mak next? Tara : This sixth novel will be the last in the Mak Vanderwall series. It has been an incredible 15 years writing Mak, and Assassin completes her story. It's time to let her go. It won't be easy, I'm sure. Maddi: You've been writing stories about Mak for many years now; what is your favourite aspect of her character as she's developed along the way? How important is a main character to grow and change as we do in story telling? Tara: I have been writing Mak for 15 years now and a lot has changed in her life -- and mine. The series sees her evolve from a tough and smart, but in some ways naive young woman to a vigilante of sorts. She has seen the dark side of humanity -- greed, sadism and violence -- and she responds by doing whatever she has to in order to survive and find justice. I love the evolution of her character. Characters must go on a journey and must evolve and grow. That is especially important in series fiction. Maddi: What has the process of developing Mak and her stories taught you about being a writer? How has your style changed over time?