Thalia grew up on a farm on the outskirts of Melbourne with a mum who tried to save battery hens by on-selling them as backyard chickens. Her dad worked as an industrial chemist while also growing strawberries, carrots and Christmas trees on the farm. It was not unusual to find plant shoots in the freezer, or the hair dryer missing because it was needed to heat one of her dad’s experiments. Thalia's childhood showed her the magic that can happen when science and nature combine with human creativity. In 2012, Thalia released her first standalone young adult novel, Silhouette, which follows a talented and determined young dancer as she navigates her way into the adult world of commercial dance. These days, Thalia lives in regional Victoria with her husband, their two children and two black cats.

Chrissie was born in 1964, in Melbourne. She grew up, mainly in Doncaster and is one of five daughters. She is number four. Chrissie is the author of over thirty books for Children and Young Adults, including thirteen books in the popular Go Girl series (under Chrissie Perry) and the award winning Whisper. She lives in inner city Melbourne with her husband, three children who are stubbornly refusing to stay young and an opinionated Maltese Shitzu called Gidget.