Squaring Circles is Book Two in the Pandora Series. The full series is: Transforming Pandora - Pandora Series - Book One - pISBN 9781780997452 - Roundfire - 2013; Squaring Circles - Pandora Series - Book Two -pISBN 9781782797050 - Roundfire - 2014; Pandoras Gift - Pandora Series - Book Three - pISBN 9781785351754 - Roundfire - 2015.