Dawn McMillan is a much-loved writer of children's books and educational readers, who lives north of Thames. She has enjoyed a number of successful collaborations with Ross Kinnaird, an internationally recognised illustrator who lives in Birkenhead, Auckland. Their 2012 book I Need a New Bum! continues to be a New Zealand bestseller, and their 2014 book Doctor Grundy's Undies reprinted even before it was published.